Bug summary

Calling the colorbar method of one Figure object does not attach the colour bar to that figure, but to the one where the object informing the colour scale resides.

Code for reproduction

from matplotlib.pyplot import subplots
import numpy as np

fig1, axes1 = subplots()
fig2, axes2 = subplots()
fig1.suptitle("Figure 1")
fig2.suptitle("Figure 2")
image1 = axes1.imshow(np.random.random((9,9)))
image2 = axes2.imshow(np.random.random((9,9)))
fig2.colorbar(image1)

Actual outcome

The colour bar gets attached to Image 1:

Expected outcome

The colour bar should get attached to Image 2. At the very least there should be an error.

Matplotlib Version

3.7.1

Installation

pip