In the next alpha release, everything was fine and I though about closing this. When I first installed b1, the problem came back. But in a few days, 3.3.0b1 started working right. I did two things since to my installed idlelib, beside just using it. First was my last 12510 calltips push July 9. Second was Ned's 4832 .py default extension patch about the 12th. I plan to watch more carefully is there is a problem after the next b2.