In certain circumstances, opening the glyph info display causes it to become somewhat unresponsive. You can interact with the window fine. but the cancel and ok button no longer seem to work. The only way to get out of the window appears to force quit Glyphs as no other option seems to work.
That happens if you accidentally hit Cmd-Opt-I twice. It invisibly opens another dialog and they are blocking each other. A fix is in the works.
That makes sense, thanks.