[Qt-creator] QtCreator 4.0.2. does not use my Ubuntu theme.

[Jochen Becher]

Hi,

I updated QtCreator from 4.0.1 to 4.0.2 and suddenly it does not use
the chosen Ubuntu theme style anymore (e.g. different layout of menubar
and completely different icon set). I have seen that in the past
already.

Why does this happen and how can I fix it? I know that building
QtCreator myself fixes it because that's what I did in the past but
currently I'd prefer to use the official version.

Regards, Jochen