A bit late for a bug fix

I was busy all week, but today, I had few minutes to look a bit more closely to the bug raised here:

I think the latest proposal fix the bug (not sure though, as I've said, I cannot test it).
If you have judged my game while this bug existed, it's fair enough, no need to retry everything, it's just for information.

It's one aspect of pyweek: discovering that things that works well on our machine suddenly are broken somewhere else.