[IPython-dev] Can't execute cells if run IPython3 Notebook at port 8888

[Kenneth Tran]

Here's a strange problem that I'm having.

If I start the notebook server with either *ipython notebook* or *ipython
notebook --port=8888*, then I cannot execute cells in the notebooks. The
cursor jumps to the next cells as usual but the cells don't run and the
numbers don't change.

If I change the port to anything else, then the problem disappears.

What are the possible causes of this issue?

My last sync of IPython 3 from Github was a few days ago.

-Ken
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