...and the Mailwasher saga continues...
After "Mailwasher: New artifact since wine v9.12" (viewtopic.php?p=144973) and "Mailwasher: New artifact since wine v9.12 - still present in v10.3" (viewtopic.php?p=146711) wine v10.9 (iirc) introduces a 3rd issue for Mailwasher.
This time it's not being able to minimize the window (which in Mailwasher's case is the same as sending to tray if set up that way). It pops right back up.
Now, as I am still on wine v9.11 because I can't stand the second artifact that came with wine v9.12 and is still present in v10.12, I don't really suffer from the new one, but it shows that the support of Mailwasher gets worse instead of better. One of these days I'd really would like to know which framework or whatever code base Mailwasher is using that it just can't play nice with wine while the other programs I'm using with wine usually have no issues (or only minor ones that don't affect the linux desktop like Mailwasher) - or don't work at all (i.e. crash at start or fail to start in the first place).
Maybe Mailwasher 8 will work better with wine - but I'm not really getting my hopes up, judging from the design I've seen in previews.