Steps to reproduce the bug that work for me with Total Commander Version 9.22rc2 64bit (2019-03-06):
- Open TC in standard mode - 2 file panels, brief view in each; make sure the cursor is visible.
- Press [Alt+Tab] to switch to another application
- Press [Alt+Tab] to switch back to TC
- Search file by name using [Alt+any letter]
- Press [Alt+Tab] to switch to another application
- Press [Alt+Tab] to switch back to TC
- The cursor is now invisible, though it still works if operated by keyboard
- Press [Alt+Tab] to switch to another application
- Press [Alt+Tab] to switch back to TC
- The cursor becomes visible again.