Scrivener Version 3.0.1.0 Bug 1
Create a comment, select text in that comment, click the font or font-size dropdown in the toolbar to change the font.
Result: text is deselected and font is not changed.
Bug 2
Bind insert comment to Alt-C
Result: it doesn’t work, no comment is inserted. If I change the shortcut to something like Alt-Q, it works fine. I use Alt-C in Word and it works there.
I can verify that shaun has found a bug: I cannot get any keystroke bound to Insert Comment to insert a comment, though the menu choice shows the keystroke, and using the menu works.