When making a polar plot with an adjusted theta direction/offset the mouse-over coordinates displayed in the lower right corner (GUI toolbar) are wrong.

The following illustrates the problem:

import matplotlib.pyplot as plt 

fig = plt.figure()
ax = fig.add_subplot(111, polar=True)
ax.set_theta_direction(-1)
ax.set_theta_zero_location("N")

plt.show()

The coordinates are only displayed correctly for the quadrant 0-90°. For the other quadrants the values go from 0° to -270° degrees (in contrast to the correct ticklabels).