The code you posted doesn't reproduce the behavior you are describing:

• The 'init' block isn't scoped.
• The variables aren't localized to reduce 'strictures' and warnings clutter.
• It doesn't include the method calls you reported to cause it to hang (except for idletasks) nor the context these methods calls are invoked in, neither.

It'd be prudent to replicate the same problem you're facing in a summary code and make the code as much self-spoken as possible to receive better responses and direction...

Best of Luck vertigomagic..

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