I am using Cosmic Desktop 1.0.0.beta.1.1-1. When I use Qt applications (e.g. FeatherPad, LazarusQt, etc.) or KDE applications (e.g. Kate, Dolphin, etc.), the windows have no decoration, i.e. no title bar for moving the window and no buttons for closing, minimising, maximising or resizing.
What could be the reason for this? I would like to use Cosmic Desktop as an alternative to Plasma, which I normally use, but I need various KDE and Qt programs that are only of limited use due to the lack of window decoration.