https://bugs.winehq.org/show_bug.cgi?id=57465
--- Comment #12 from RĂ©mi Bernon rbernon@codeweavers.com --- The fix has been merged into KWin, and, I believe, planned for 6.3 release.
Although Wine regressed in some way, it is mostly because we were updating _NET_WM_STATE much more aggressively before.
It is possible to implement some sort of workaround, but it may very well break other window managers, so it's not a very good solution and I'm not sure it's a good idea to implement workarounds on our side.