8000 Don't try to set missing history buttons. · Issue #14318 · matplotlib/matplotlib · GitHub
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Don't try to set missing history buttons. #14318
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#14319
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Don't try to set missing history buttons.#14318
#14319
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Release criticalFor bugs that make the library unusable (segfaults, incorrect plots, etc) and major regressions.status: confirmed bug
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v3.1.1
@efiring

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@efiring
efiring
opened on May 25, 2019

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Bug summary
The qt5, wx, and gtk3 backends try to set the enabled state of 'back' and 'forward'
history buttons, which don't necessarily exist if a non-standard Toolbar is in use.
Adding this to the qt5 backend in #12886 breaks existing user code when going from
v3.0 to v3.1.

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