I agree both #298548 and my last comment are close to each other. But this last problem is a raw game engine problem (due to a sketchy fix of mine) in the line of this present bug, whereas #298548 is a pure Tk related GUI problem.
I agree both #298548 and my last comment are close to each other. But this last problem is a raw game engine problem (due to a sketchy fix of mine) in the line of this present bug, whereas #298548 is a pure Tk related GUI problem.