Wrong character encoding in ScriptUI panel
I built a ScriptUI panel and suddenly all non ASCII-characters are mixed up:

The last word should read »löschen« (= delete in German).
The problem happened before and disappeared after a while.
I have absolutely no idea, wheather what caused it nor what caused it to go away.
Any idea, how to fix this (other than using ASCII only)?
I couldn’t find anything on this issue.
Thanks, Martin
