A high-end code editor for GameMaker: Studio / GameMaker Studio 2 · By YellowAfterlife
I can only copy or paste by right mouse button, not with shortcut.
On Mojave and I've had the same issue. Happy to see it's not just me.
Someone reported this before but I'm not really sure what's up as I did not touch copying/pasting at all - that's handled by the code editor component.
Copying/pasting from context menu uses a native clipboard API and I could probably make this use that too, but weird that it breaks at all
Control + C & Control + V don't work on my system. It looks like I can Copy&Paste from Ace Demo. I don't use GMLive so I can't confirm/deny that.