Crash after disabling order by

Every time I try do disable the order by in a table using the graphic interface red cross I get a crash.

Added bug report and screen.

Probably related to issue #849, or also to issue #520 . Please try if resetting the theme to "Windows" solves the issue. And probably report in issue #520 then.

Right, working with windows theme.

Hey, I wanted to report this, too.

Maybe I'll add the theme error which happens when I wanted to save the error log. Just FYI.

Thanks.