Bug summary

Whenever CheckButtons are within a plot area, the useblit=True (in a cursor for example) produces visual errors with the buttons when the mouse is within the plot area so the cursor is active. The issue seems to be backend-agnostic (confirmed in Qt5Agg and TkAgg for now).

Code for reproduction

import matplotlib, matplotlib.pyplot

checkbutton1 = False
checkbutton2 = True

figure = matplotlib.pyplot.figure()
matplotlib.pyplot.subplots_adjust(top=0.9) # no bug without this line or if margin large enough

ax = figure.add_subplot()
ax_cursor = matplotlib.widgets.Cursor(ax, useblit=True) # no bug with useblit=False

ax_settings = matplotlib.pyplot.axes([0.8, 0.8, 0.1, 0.1])
input_settings = matplotlib.widgets.CheckButtons(ax_settings, ["Set1", "Set2"], [checkbutton1, checkbutton2])

matplotlib.pyplot.show()

Actual outcome

Expected outcome

The check mark for Set2 is missing even though checkbutton2 = True. When the mouse leaves the area and deactivates cursor, the check mark reappears.

Additional information

No response

Operating system

GNU/Linux

Matplotlib Version

3.7.1

Matplotlib Backend

TkAgg, Qt5Agg

Python version

3.10.10

Jupyter version

no Jupyter

Installation

Linux package manager