http://gambaswiki.org/bugtracker/edit?object=BUG.2212&from=L21haW4- Comment #2 by Benoît MINISINI: I have just installed a fresh Mint 20 Cinnamon in VirtualBox, with Gambas 3.16.1 installed from Gambas stable PPA, and CTRL+C / CTRL+V work as expected in the IDE.