some shortcuts don't work when using alternative input source

I have two different input sources and I toggled between them depending if I'm using my notebook keyboard or a bluetooth keyboard attached to it. I recently installed gnome-shell in ubuntu and I find that when the first input source is chosen, all shortcuts works as expected. But when the second input source is selected, I can't use at least the most common shortcuts: ctrl+shift+C (copy) and ctrl+shift+V (paste).

This error is the same no matter which input source I have selected as the first (default). The thing is I have this problem only when working using gnome-shell. This issue is not happening when using Unity.