Florian "sp1rit"

I did some digging and it appears that the symbol inserted by `\square` is U+25FB (WHITE MEDIUM SQUARE), which is available in XITS but not in the other fonts. ...

No. You could either investigate why fontforge is not detecting your font as math font or maybe look into merging the missing symbols into Latin Modern Math and generate the...

> But due to the above, I am not sure ATM whether to get this change in or just work on the new/next sink sooner and disable this "legacy" code...

You'll need to send the stacktrace. Possibly clatexmath is missing some files