It would be better if development and alpha testing would not be done on the 'production system', bothering the normal users.
That's not the issue. I was testing with a test file, and movement by mouse did not stop working for me. The issue is that I was testing only in solitaire mode, assuming that actual games between people were not relevantly different. I added an ID to the form, but that wasn't the relevant difference. I don't know what it is right now, and without a backup, I have no quick fix. I'll look into this further after breakfast.
That's not the issue. I was testing with a test file, and movement by mouse did not stop working for me. The issue is that I was testing only in solitaire mode, assuming that actual games between people were not relevantly different. I added an ID to the form, but that wasn't the relevant difference. I don't know what it is right now, and without a backup, I have no quick fix. I'll look into this further after breakfast.