Event picking does not seem to work on polar bar plots

[kasperloopstra1]

The minimal example provided below has been tested on Windows 10, Python 3.5.2 (Python 3.5.2 (v3.5.2:4def2a2901a5, Jun 25 2016, 22:01:18) [MSC v.1900 32 bit (Intel)] on win32 ), matplotlib 1.5.3.

Running the code below results in events being printed for the Cartesian bar plot, but not for the polar bar plot. Changing the bar plots to scatter plots works for both Cartesian scatter plots and polar scatter plots.

 
#!/usr/bin/env python3
import matplotlib.pyplot as plt
 
def onpick(event):
    print(event) #Only events from fig2 are shown
    return True
rect=[.1,.1,.8,.8]
fig1 = plt.figure()
ax = fig1.add_axes(rect,polar=True)
ax.bar(1, 2,   picker=True)
fig1.canvas.mpl_connect('pick_event',onpick)

fig2 = plt.figure()
ax2 = fig2.add_axes(rect,polar=False)
ax2.bar(1, 2,  picker=True)
fig2.canvas.mpl_connect('pick_event',onpick)
plt.show()

[anntzer]

This is fixed by the yet-to-be-merged #7844 (which was originally written for #3540 but it's essentially the same issue).