Bug report

When animating a 2D plot with a colorbar, updating the color limits in each iteration changes the size of the colorbar. This issue did not exist with matplotlib 2.2.3.

importnumpyasnpimportmatplotlib.pyplotaspltfromscipy.ndimageimportlaplacedefmain():time=np.arange(0,1,0.01)c=np.zeros(shape=(11,11))c[5,5]=1fig=plt.figure()ax=fig.gca()im=ax.imshow(c)fig.colorbar(im)fortintime:c+=laplace(c)/10im.set_data(c)im.set_clim(0,np.max(c))plt.pause(0.001)plt.show()if__name__=="__main__":main()

Actual outcome

Expected outcome

Matplotlib version

• Operating system: windows 7
• Matplotlib version: 3.0.0
• Matplotlib backend (print(matplotlib.get_backend())): TkAgg
• Python version: 3.7

Python was installed using the latest Anaconda distribution.