I have Debian 10 and recently upgraded to wine-5.14 from 4.x. When I start HeidiSQL (11.0.0.5919) from the command line, I get this:
02b4:fixme:wincodecs:BitmapScaler_Initialize unsupported mode 4
If I select a database, sometimes it immediately crashes, sometimes I get "Error: canceling statement due to statement timeout".
The plus signs (+) in the main tree are missing. This also happened in wine 4.x.
At this point, HeidiSQL is almost unusable due to the crashing. It sometimes crashed in wine 4.x, but not nearly as often as in 5.14.
Issues with HeidiSQL
Re: Issues with HeidiSQL
The developer of HeidiSQL provides good support for Wine problems.
https://github.com/HeidiSQL/HeidiSQL/issues
https://github.com/HeidiSQL/HeidiSQL/issues