python - Jupyter becomes unresponsive when using backend osx -

since have updated ipython jupyter notebooks become unresponsive (* next input cell) when specify osx plotting backend. commonly line magics %pylab, automatically sets backend osx, or %matplotlib osx. both commands make notebook unresponsive. made following observations:

• the notebooks becomes unresponsive 30 seconds after evaluation of 1 of above magics.
• even simple commands 1+2 take 7 seconds produce output
• after evaluation (and output) notebook takes again 7 seconds return busy state
• once unresponsive, notebook not become responsive again when changing backend
• the backends inline , notebook work fine

i not think problem has ipython issue #4431 since happens ~30s after specifying backend whether type or not.

i use following setup:

• mac os x el captain 10.11.2
• python 3.5.1
• jupyter 1.0.0 (jupyter --version == 4.0.6)
• ipython 4.0.3

how osx backend working?