GUI messed up inside Editor, Build is fine

[mauricepape]

When updating from Unity 4 to Unity 5, some of my GUI Objects (Panels and Texture Sprites) were behaving incorrectly. Panels wasn't there were they supposed to be. At first I though it's because of the transition (DFGUI isn't really U5 ready due the discontinuing), but then I made a testbuild, run it and saw that everything was working correctly.

Any idea whats going on and how to fix that?

[jbruening]

I have moved my project to u5, and the editor looks like its working fine.

[mauricepape]

Forgot to mention earlier: I'm using 5.0.1f1 and DFGUI from this repo ^^

I think some Pictures might tell better...

In-Game (before hitting Play):

Scene View, before hitting play:

In-Game (after hitting play):

Scene View, after hitting play:

It also appears to happen only when test-running in "Maximize on Play" mode... Again, Builds (Standalone or WebPlayer) are non-affected from this! It's only in the Editor.