Hi Thomas
that is a very good point; I have had the same observation myself, from time to time (and thought ... 'that is not supposed to happen').
It would also answer the question about what might be different ... 6.8.9 was working fine for me earlier.
However, I have just tried deleting a.. the .pyc files (before using v6.8.10 again), and the problem still seems to be there.
I now have a trivial command which is supposed to execute c.editCommands.endOfLine(None), it does to cause the cursor to move. I will experiment further.
(FWIW, the other other 'it happens occasionally' problem I have is with abbreviations; sometimes these do not seem to get correctly expanded. The behaviour seems different within different .leo files, if I have more than one open).
This is all a bit hard to report/act on, I appreciate...
Regards, J^n