GUI test fails

I'm getting this error when I run the tests:

$ python3 -m ase.test.gui.run color
color
Exception in Tkinter callback
Traceback (most recent call last):
  File "/usr/lib/python3.5/tkinter/__init__.py", line 1553, in __call__
    return self.func(*args)
  File "/usr/lib/python3.5/tkinter/__init__.py", line 599, in callit
    func(*args)
  File "/home/jensj/ase/ase/test/gui/run.py", line 139, in f
    test(gui)
  File "/home/jensj/ase/ase/test/gui/run.py", line 90, in color
    assert [button.active for button in c.radio.buttons] == [1, 0, 1, 0, 0, 1]
AssertionError