[REG 5.2->5.3] Qt 5.3 broke some QML behavior (transitions)

Upgrading my application from Qt 5.2 to 5.3 broke parts of the transitions in the application UI. This happens in several places where I'm opening & closing fullscreen overlays using fading & scaling.

The same problem is visible both on desktop (windows msvc2010 OpenGL) and Android.

I created a test app to find out at least one way to reproduce the problem (attached). It seems that if I put over 254 characters in a TextInput that is part of the transition, the transition breaks.

However, in my application the problem can be seen also in a some places where there is no TextInput, so it is clearly not the only thing causing problems.