The new GUI infrastructure for ROS "rqt" can use either PySide (LGPL) or PyQt (GPL).
Sadly the recent PySide releases are all broken for our use case due to a regression in PySide (since version 1.1.0).

We have filled an issue with a simple-to-apply workaround in June: https://bugreports.qt-project.org/browse/PYSIDE-76
Yet it has not been included in the recent patch released.

Therefore I would like to ask you to vote for the issue to encourage the developers to fix this bug sooner than later.

Thanks,
- Dirk