Different alternate layers to components not supported

I’m getting heaps of these:

```
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Needlepoint SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Needlepoint SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Needlepoint Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Needlepoint Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Agate SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Agate SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Agate Black SemiCondensed has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph h in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph k in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_h.liga in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph f_k.liga in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph fl in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_h.liga in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_k.liga in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph longs_l.liga in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_h.ligature in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
WARNING:glyphsLib.builder.builders.UFOBuilder:Glyph _f_ydieresis.ligature in master Agate Black SemiExpanded has different alternate layers to components that it uses. We don't currently support this case, so some alternate layers will not be applied. Consider fixing the source instead.
```

Is this https://github.com/googlefonts/glyphsLib/issues/837 again?