[PyQt] [BUG] UI files loading/parsing is not reentrant (PyQt 5.4.2 nightly d5b00e76067f)

[Vladimir Rutsky]

The ui loader/parser is not reentrant.
If another UI load is requested during loading of UI file, final
layout may be corrupted.

Here is an example that reproduces this bug, with screenshots of how
it looks like, and how it should look like:
https://gist.github.com/rutsky/b44d7a9abe4fe0c89dc0


Regards,

Vladimir Rutsky