Xed 3.8.7
OS: Manjaro XFCE latest
Tried Xed 3.8.7 under experimental Wayland.
I use MacOS style for window, aka the close, min, max buttons are to the left of the window and not to the right.
Under X11 no problem, under Wayland these buttons default to the right.
Note other apps were also affected by this bug(ex: Terminal), some not(ex: Calculator).
under xfce settings appearances

Thanks
P.S. Maybe linked with bug #689