Renamed Folder - Infinite Loop - Crash

I’ve tried to rename a Folder from “aaa” to “aaa/bbb” - A messagebox is telling me, there is an illegal character. I can klick OK, but the messagebox pops up again, and again, and again…
…no chance to change the foldername…
…I’ve tried to fast, the eMclient crashed…

Maybe try without the “/”.

Great - I‘ve tried the „/„, now I have no chance to try something else… OK, After Crash and ReIndex…