Bug report

I'm using a python library that happens to execute

from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas

When I plot using the TkAgg backend in interactive mode, the figure is unresponsive, though the data shows itself in that figure if I open a new figure.

Code for reproduction

import matplotlib.pyplot as plt
plt.ion()
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas
plt.figure()
plt.plot([1], 'ko')     # plot a point

Actual outcome

The figure is unresponsive and blank, and the Mac spinning beachball symbol shows if I hover the cursor over it.

Expected outcome

The figure is plotted and responsive.

Matplotlib version

Matplotlib version 2.0.0.

python info:
Python 3.5.2 |Anaconda custom (x86_64)| (default, Jul 2 2016, 17:52:12)
[GCC 4.2.1 Compatible Apple LLVM 4.2 (clang-425.0.28)] on darwin

Mac OS X, 10.11.6

Everything was installed using anaconda.