@marcan audacious, qmmp, and probably xmms use funny windows when they're using winamp skins, since that's how winamp works
the funny windows meaning it's like, 3 windows that can be moved together, which works as intended in X, but not in wayland. in wayland it just... doesn't work, and often spawns the windows in random places, and doesn't let you move all 3 windows at the same time when they're stacked.
i'm guessing it's either (X)wayland doing something wrong, or the programs just using a deeper layer of X that xwayland doesn't implement
@marcan really the windows do render, and you can still move them around, it's just that it doesn't work all that well.
audacious is the best music player out of all 3, and last i checked (around 6-ish months ago) it still had that issue unfortunately :/
i could use it without winamp skins, but i made a xenia the fox skin for it and i'm not gonna let that go to waste