3-finger touchpad gestures crash wine applications (including Steam Proton games)
It seems that wine programs crash when they receive gesture events from the compositor, and it's particularly annoyning that it even happens for gestures which should not even reach them like the ones reserved for the Gnome shell (the 3-finger swipes for activities and workspace switching).
As a workaround untill Wine gets fixed, I think Gnome should not send these events to clients, as even a client that handled them correctly would not have any good use for them as having those gestures act both in the client and in the shell would be counter-intuitive.
The relevant issues on Wine and KDE Bugzilla, and also a KWin MR implementing this on their side.