I select and copy from Firefox and ctrl-shift insert pastes it into a terminal 95% of the time.

Rightclick paste always pastes it into a terminal.

Selecting in the terminal window and right click copying is the only way to reverse it which is pretty attrocious as I have to zoom way out and other shenanigans.

If any emacs-fu greybeards know of how to emacs Yank to the Gnome clipboard I will be eternally grateful.

caveat my terminal app is usually emacs.