When trying to use \Box I get the following warning in Chrome:
No character metrics for 'â–¡' in style 'Main-Regular'
It does display correctly though.
I'm new here, so I don't know the exact problem, but I observe that character 9633 (â–¡) is defined in style AMS-Regular but not in style Main-Regular in src/fontMetricsData.js. Confused why this isn't automatic via metrics/extract_ttfs.py. (Also, can you set a style somehow?)
I am also getting this error in Firefox and Safari
@edemaine it sounds like that's the bug. That should be pretty easy to fix.
Finally tracked this down. See #609.
Closed by https://github.com/Khan/KaTeX/pull/618.
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Finally tracked this down. See #609.