I think i've found a bug, or at least a quirk.
Was having an issue with resizing a window where double clicking the title bar wouldn't resize to full screen (minus kde's toolbar at the bottom). The zoom status, page number setting, layers, current cursor coordinates, and measurement weren't visible.
Solution was to un-dock all the panels and then resize the windows. Has anyone else experienced this?
Just to be clear: you're speaking about windows of documents inside of Scribus or the Scribus window as a whole?
Anyway, I have no issues resizing the Scribus window (since I'm using a tiling window manager, I'm doing that all the time) nor maximizing document windows inside of the Scribus window (had to try it out, since I never do that).
Question: X11 or Wayland?
The window as a whole. I found the culprit. The Content Properties window is having issues with resizing. I can adjust the width to be as narrow as the others, or as short. Still trying to determine the cause.
Found another program that has a similar issue. So it isnt a scribus bug. Now to track down the culprit in KDE.