Created attachment 131129 [details] Screenshot The hide button would perfectly fit, but instead the ">" is shown for the the second row of toolbar buttons, though only for the hide button. SOFTWARE/OS VERSIONS Operating System: Manjaro Linux KDE Plasma Version: 5.19.4 KDE Frameworks Version: 5.74.0 Qt Version: 5.15.0 ADDITIONAL INFORMATION Scaling: 2.0
Created attachment 131130 [details] Screenshot: Mockup There's actually space.
> There's actually space. Yes. > The hide button would perfectly fit No, not perfectly. For a smart user it looks obvious that there is enough space for the red circle. But this button is a tool button with a square icon, and thus has the same size as the “Keep Active” button next to it.a You can see in your screenshot that “Keep Active” is square, but the button with the arrow is not square, and so fits there. This is probably because the arrow is not an icon, but a “GUI primitive”, which happens to be narrower in Breeze widget style. Probably one of these: https://doc.qt.io/qt-5/qstyle.html#PrimitiveElement-enum Closing as INTENTIONAL, because the size hint concept of the Qt layouting system is designed too simple to communicate “I can fit there if you allow me to put less padding arround the icon than the specified minimum in the Breeze widget style”; and Okular just uses this system. If this is an issue, you could try e. g. Fusion widget style, that uses less padding.
Thank you for the explanation!