@ascherbaum what about Spectacle? That works on my KDE with Wayland when pressing Print-Screen.
@intrbiz Usually I use flameshot because I can select the area I want to screenshot. Or I use Gimp, because I need some additional editing.
If both are not working and reporting that they can't take a screenshot, something is seriously broken.
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@ascherbaum Spectacle supports all that and can export to various programs.
@intrbiz I can check when I'm back home.