Have a feeling this is caused by the UTC font auto activation as files when need fonts activated this hoopoes to.
I basically open a .ai file, use the “find font” command, this flashes but never comes up. Can do this 100 x and will not stay open. This doe into happen on every files, but more so an ones which had a font auto activated.
I can fix by closing all files and opening the field again.
We updated to 6.1.2 2 days recently and this is still happening.