Problem with text rendering in scene

JadedTuna

I am having these weird problems with text rendering using scene.<br>
It gives me a black rectangle instead of text, but if I switch to another app and switch back to Pythonista, it shows text instead of rects.

Any ideas how to fix it?

GitRepo with files: https://github.com/Vik2015/uilib<br>
Run testui.py

P. S. Running iPad 3, iOS 7.1.1

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