Bug when clearing axes created with twinx

[astrofrog]

Buggy case

The following example produces an empty figure:

import matplotlib.pyplot as plt

fig = plt.figure()
ax1 = fig.add_subplot(1,1,1)
ax2 = ax1.twinx()
ax2.cla()
ax1.plot([1,2,3])
fig.savefig('test.png')

Control case

If I remove twinx it works:

import matplotlib.pyplot as plt

fig = plt.figure()
ax1 = fig.add_subplot(1,1,1)
ax2 = ax1.twinx()
ax1.plot([1,2,3])
fig.savefig('test.png')

Versions

$ python --version
Python 3.4.2 :: Continuum Analytics, Inc.
$ python -c 'import matplotlib; print(matplotlib.__version__)'
1.4.2

[tacaswell]

Duplicate of #3633 which should have been fixed by #3634 which should have been released with 1.4.3. If this still exists in 1.4.3 please ping to have reopened.

[astrofrog]

@tacaswell - ah yes, it is indeed fixed now - sorry for the noise!