text cut with custom font breaks face

Hey,

I tried to cut the text in a solid, using a custom font, but the upper face breaks. I tried three fonts:

- Quicksand-Bold.ttf
- Comfortaa-Bold-tff
- Nunito.ttf

All have the same effect:


With default font it works fine:


I used the following code:

```python
from jupyter_cadquery import (
Edges,
Faces,
Part,
PartGroup,
Vertices,
close_viewer,
close_viewers,
get_defaults,
get_viewer,
open_viewer,
set_defaults,
show,
)
from jupyter_cadquery.replay import disable_replay, enable_replay, replay, reset_replay

import cadquery as cq
from cadquery import exporters
import math
import os
set_defaults(axes=True, timeit=False, control="orbit")
cv = open_viewer("Examples", cad_width=640, height=480, glass=True)
enable_replay(False, False)
show_object = replay

circle_outer_end = 10
length = 30
thickness = 2
fillet = 0.6
text = "CQ"

c = length

directory = os.getcwd()

result = (
cq.Workplane("XY")
.moveTo(c, 0)
.circle(circle_outer_end)
.extrude(thickness, combine=True)
.edges()
.fillet(fillet)
.faces(">Z")
.workplane()
.center(c, 0)
.transformed(rotate=(0, 0, -90))
.text(
text,
fontsize=8,
distance=-0.5,
fontPath=os.path.join(directory, "phijn_font/Quicksand-Bold.ttf"),
cut=False,
kind="bold",
combine="cut",
clean=True
)
)

show(result)
```

On closer inspection I have the feeling the font is not properly converted to a solid:


Can I do something on my side?