4.1 appimage from arranger cannot copy/paste track or part of it #1088

Neither audio or midi track copy/paste work from arranger.
Copy/paste works in 4.
Only tested appimages,
From latest 4.1 , create a midi track,a part, select it,ctrl c bring the cursor to end of selected part ,ctrl v make the cursor return to beginning but nothing is copy.
Shortcuts within part editor does work.