Lines are not affected by changing polar limits after draw #12887
Description
From #12300, something funny happens if you flip the radial limits after a draw. @jklymak noted that this is also a problem on current master if you just change the limits (but no flipping.)
#!/usr/bin/env python
import numpy as np
import matplotlib.pyplot as plt
fig, (ax0, ax1, ax2) = plt.subplots(1, 3, subplot_kw=dict(polar=True))
ax0.plot([0, 1], [-1, 1])
ax0.scatter([0, 1], [-1, 1])
ax0.set_rmin(-1.5)
ax0.set_rmax(1.5)
ax0.set_title('Forward')
ax1.plot([0, 1], [-1, 1])
ax1.scatter([0, 1], [-1, 1])
ax1.set_rmin(1.5)
ax1.set_rmax(-1.5)
ax1.set_title('Backward')
ax2.plot([0, 1], [-1, 1])
ax2.scatter([0, 1], [-1, 1])
ax2.set_rmin(-1.5)
ax2.set_rmax(1.5)
ax2.set_title('Backward with draw')
fig.canvas.draw()
ax2.set_rmin(1.5)
ax2.set_rmax(-1.5)
plt.show()
Originally posted by @QuLogic in #12300 (comment)