Created attachment 149381 [details] Screenshot showing the behaviour Dragon Player shows fragments below the actual video on Wayland with a Scale Factor of 200%. This only happenes in windowed mode. Fullscreen works fine.
Which phonon backend is installed?
Gstreamer. I have figured out that it's related to subtitles. Without subtitles it works as expected.
The gstreamer backend is fairly unmaintained, you may have better luck with the VLC one.
I would like to try but I cannot get it to work. If I see it correctly, it should be provided by the vlc package on Fedora: https://github.com/rpmfusion/vlc/blob/master/vlc.spec but it does not show up in phononsettings. I have asked in the rpmfusion irc channel and the answer was this: <lioh_> hi all. from https://github.com/rpmfusion/vlc/blob/master/vlc.spec i can see that the vlc package should now provide phonon-backend-vlc but when i open phononsettings and choose backend it is not listed as an option. <xvitaly> lioh_: Phonon is a legacy multimedia toolkit. <lioh_> could you explain what that means, please? <xvitaly> lioh_: It means you shouldn't use it. <lioh_> hmm, i use dragon player and it depends on it <xvitaly> Use PulseAudio or PipeWire. Do you understand what that means?
This backend for Phonon is no longer maintained or supported, and has not been for quite some time. Please use the VLC backend instead--which is the recommended and maintained replacement--and see if you can reproduce the issue there. If you can, please open a new bug report at https://bugs.kde.org/enter_bug.cgi?product=phonon-backend-vlc. Thanks a lot!