comments are not recognized in direct buffer in CSS or JS

Here's the way it looks in the direct buffer:


(Different colored identifiers are because I use `rainbow-identifiers-mode` which makes the problem more obvious, but disabling that doesn't change the overall behavior.)

With `vue-mode-edit-all-indirect`, an indirect buffer looks more like what I'd expect:


Indentation is also broken in the direct buffer; tab at any point just collapses indentation to the left margin. But I can't get flycheck et. al. to work in indirect buffers.