A few month ago, I wondered why qtc's main window sometimes "magically" exceeded screen width when maximized. But I didn't know how to describe or reproduce this one until now. Seems, that the task widgets in the bottom right area are resizing the whole window to their minimum width. Especially the "Ausgabe der Anwendung" (Application Output) widget does that. Additionally, the project tree widget becomes smaller and not resizable in width. This behaviour is very annoying ( though my old 1280px screen is too small, I know ). I bet, the minimum width's of the bottom tool widgets could be chosen smaller.