Layout Problem

[sabonis]

Thank you for reply, I can't post the ui file .
The vboxlayout is contained in a hboxlayout (the layout of the mainwindow), but the problem presents itself even before I set the hboxlayout. Moreover is visible that the EVIL BOTTOM MARGIN is between the red bottom bound of the vboxlayout and the bottom of the bottom widget.

[jpn]

We don't need the original .ui file. Just prepare small example which shows the problem.

[sabonis]

Problem solved.
There was an invisible label!