I can also confirm this bug in ubuntu 20.04.5 / gnome version 3.36.8 / X11.
Turning the pointer location feature off (gnome-tweaks), the left control key is working again.
It happens in remote sessions only, in particular with the citrix workspace app.
I can also confirm this bug in ubuntu 20.04.5 / gnome version 3.36.8 / X11.
Turning the pointer location feature off (gnome-tweaks), the left control key is working again.
It happens in remote sessions only, in particular with the citrix workspace app.