Bug report

Bug summary

Per the title.

Code for reproduction

frompylabimport*t=np.random.random((10,10,4))ax=plt.figure().add_subplot()ax.imshow(t,extent=(0,2,0,2))ax.imshow(t,extent=(1,3,1,3))show()

Actual outcome

Expected outcome

Matplotlib version

• Operating system: linux
• Matplotlib version (import matplotlib; print(matplotlib.__version__)): head
• Matplotlib backend (print(matplotlib.get_backend())): agg
• Python version: 39
• Jupyter version (if applicable):
• Other libraries: