I downloaded and installed Audacity 4.0 yesterday. Initially, tapping delete/backspace, ctrl+x, ctrl+c, ctrl+v worked, but after 5 or 6 edits, they quit working (both the keyboard shortcuts and tapping the command from the edit tab). I have since closed and reopened the program, and restarted my computer, just to see if that would fix it - to no avail.
I’ll have to go back to the previous version until that is fixed, as it is VITAL functionality.
PLEASE let me know if you’ve also had this issue, and have found any solutions!