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[Bug]: Configure subplots dialog freezes for TkAgg with toolmanager #22092
Description
Bug summary
When using the toolmanager toolbar with the Tk backend the "Configure subplots" dialog works at first but then freezes.
Code for reproduction
import matplotlib.pyplot as plt
plt.rcParams['toolbar'] = 'toolmanager'
plt.matplotlib.use('tkagg')
plt.plot((1,2))
plt.show()Actual outcome
Open the dialog and move some sliders - after a short while the dialog freezes.
Expected outcome
Dialog should not freeze.
Additional information
It works fine without the toolmanager.
Operating system
Windows
Matplotlib Version
3.5.1
Matplotlib Backend
TkAgg
Python version
3.8.2
Jupyter version
Installation
pip
Activity
richardsheridan commentedon Jan 11, 2022
I can confirm this bug and also it seems have been introduced between 3.3.4 and 3.4.0rc1.
gtoombs-microsaas commentedon Feb 16, 2022
Similar situation, different pathway: if you copy the slider example but let both of the sliders go out of scope, the sliders will stop working.
If either of the sliders is kept in scope, both sliders will continue to function.
QuLogic commentedon Feb 16, 2022
That's unrelated; all widgets must be kept in scope to remain functional. It says so on every widget.
QuLogic commentedon May 5, 2022
It seems to be working for me; maybe fixed by one of your recent PRs, @richardsheridan? Or perhaps it is Windows only?
richardsheridan commentedon May 5, 2022
Looks like it was fixed by @anntzer in b896076 as part of #21992. I don't think it's totally obvious why it was fixed, which presumably also makes the fix hard to backport to 3.5.x... I recommend closing this issue unless someone has a solid plan to backport a patch.
richardsheridan commentedon May 5, 2022
For good measure I also bisected the bug introduction back to b9d9049 in #18226. Also not very helpful in proposing a backportable patch!
QuLogic commentedon May 5, 2022
Hmm, okay then, I think we can close this.