bug#31968: 26.1.50; Allow to hide title bar on maximize (gtk/gnome/csd)

[Carlos Pita]

FWIW I donʼt see this under kwin (I do have focus-follows-mouse, which
might be influencing it).

As I mentioned elsewhere the effects seems to be very WM dependent. The pair maximize-undecorate / unmaximize-decorate works fine on Cinnamon (but not every other combination or sequence), maybe also under Plasma, but I wouldn't count on it to continue working after a new release except the developers explicitly supported the ability to change decorations.