Note: Make sure you release ALT-TAB shortly after clicking. It doesn't seem to happen if you keep ALT-TAB pressed down, which causes the previously active app to switch back.
I just push Alt+Tab nothing more, no mouse involvement or anything else. As soon as I press those two keys Xfce crashs with the in the subject mentioned error.Two year ago...
When cycling (i.e. alt-tab), xfwm crashes when using the mouse to select a window behind the window list (#561) · Issues · Xfce / xfwm4 · GitLab
Version: 4.16.1 (revision 5f61a84a) When cycling through windows (via alt-tab), clicking a...gitlab.xfce.org
I don’t know, will check later as I have to reboot into that environment.Is compositing turned on?
Checked that right out of the gate, unfortunately nothing there. I will try that compositing setting this weekend.Check also ~/.xsession-errors. Maybe some messages regarding the problem has been logged.