KWin needs to announce to Surfaces with which Outputs they overlap.
See KWayland::Server::SurfaceInterace::setOutputs
KWin needs to announce to Surfaces with which Outputs they overlap.
See KWayland::Server::SurfaceInterace::setOutputs
On Qt < 5.9 this will just break if scaling is enabled on only one of the outputs.
Probably best to not rush to do this.