[Bug 57456] Wine wayland scaled window is positioned on the left, not centered

[WineHQ Bugzilla]

http://bugs.winehq.org/show_bug.cgi?id=57456

--- Comment #9 from daniel  ---
The lack of centering of the window and the black borders is something that
labwc doesn't really implement. However, a labwc developer has become aware of
this, so it's probably something that will be fixed eventually!
https://github.com/labwc/labwc/issues/2779