Comment 161 for bug 1181666

I too have been having this issue in Ubuntu 21.04, Gnome-shell 3.38.4.

My system has a touchpad and touchscreen, the closest i have gotten to consistently re-create it is to use the touch screen to click on the same launcher icon multiple times.

It is quite an annoying bug as i get it 4-5 time a session, it seems a little beyond a 'first bug' or id have taken a shot at looking into it.