In X11 Ctrl+C is the keyboard shortcut for copy, and I use it a lot. In Wayland it crashes the desktop. How do I make it work?
Something is wrong with your setup. This has worked for wayland for years. This has nothing to do with X11 or wayland
Have a look in the system and user journals for clues about the crash.
As stated this is nothing to do with wayland vs x11.