Bug summary

When adding multiple colorbars with plt.colorbar to different subplots and then removing them again, the removal affects the width of the other subplot.

Code for reproduction

fig, ax = plt.subplots(2)
s = ax[0].scatter([0, 1, 2], [0, 1, 2], c=[0, 1, 2])
plt.colorbar(s, ax=ax[0])
cbar = plt.colorbar(s, ax=ax[1])
cbar.remove()

Actual outcome

Expected outcome

Additional information

This bug occurs with matplotlib>=3.4.0, matplotlib 3.3.4 produces the picture shown under "expected outcome", which is what I would assume is correct.

Operating system

macOS 11.0.1 and Ubuntu 18.04

Matplotlib Version

matplotlib 3.5.2

Matplotlib Backend

module://ipykernel.pylab.backend_inline

Python version

3.8.5

Jupyter version

4.6.3

Installation

pip