Expansion adds to Clipboard, but does not affect app window

macOS Catalina. Have toggled Accessibility in SysPref->Security.

Symptoms: Macro was triggered, and results appear in the Clipboard, but nothing happens in TextEdit: the trigger is not erased, and nothing is pasted. This is true of several macros.

10.15.5 added something new in Security: Input monitor. But Keyboard Maestro does appear there, and cannot be added.

I will try deleting KM and rebooting, then reinstall.

Reinstalled as above and everything works again. ???
Apple needs to work on macOS -- a lot.