Cannot change between UI tabs on OSX

[joshburnett]

Description

What steps will reproduce the problem?

1. Start Spyder via python bootstrap.py
2. Try to change between Console, History Log, IPython Console, Object Inspector, Variable Explorer, etc.
3. The tab selectors now look like this:
   
   ...and the tabs have not changed state.
4. If I change to a different app, and then change back to Spyder, the originally-selected tab and the last-selected tab will be highlighted, like so (IPython console tab initially selected, then clicked on Console, and then History log):
   
   But the UI is still showing the IPython console tab.

I can get a particular tab to show up if I first hide the pane and then make it visible again via the View > Panes menu items.

Version and main components

• Spyder Version: 3.0.0b1
• Python Version: 2.7.10
• Qt Versions: 4.8.6, PyQt4 (API v2) 4.11.3 on Darwin

Optional dependencies

pyflakes >=0.5.0:  0.9.2 (OK)
pep8 >=0.6      :  1.6.2 (OK)
pygments >=1.6  :  2.0.2 (OK)
IPython >=3.0   :  3.2.0 (OK)
zmq >=13.0.0    :  14.7.0 (OK)
pandas >=0.13.1 :  0.16.2 (OK)
sphinx >=0.6.6  :  1.3.1 (OK)
psutil >=0.3    :  2.2.1 (OK)
rope >=0.9.4    :  0.9.4 (OK)
jedi >=0.8.1    :  0.8.1 (OK)
matplotlib >=1.0:  1.4.3 (OK)
sympy >=0.7.3   :  0.7.6 (OK)
pylint >=0.25   :  None (NOK)

[blink1073]

I see the same thing. @goanpeca:

 $ git bisect bad
e042cfc9a153baa91101f41aa52ff4cb1c6dee4f is the first bad commit
commit e042cfc9a153baa91101f41aa52ff4cb1c6dee4f
Author: Gonzalo Peña <goanpeca@gmail.com>
Date:   Sun Apr 26 23:08:33 2015 +0200

    Add drag support for dockwidgets sharing same position

:040000 040000 86292e5630d8b9371a6d8ce2cb9595fe376b9a9d 468580d4e3247fd8eede540d113a524c7dacc622 M  spyderlib

[goanpeca]

Hmmm ... I need a mac! :s

[ccordoba12]

I thought that was the case too. @goanpeca, this needs to be fixed for beta2.