[Bug 53660] New: wait_for_withdrawn_state

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53660

Bug ID: 53660
           Summary: wait_for_withdrawn_state
           Product: Wine
           Version: 7.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: minor
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

We have an issue where something in wine behave differently when receiving a
WM_DELETE_WINDOW message: with some window managers it unmaps the window (ie:
fluxbox) but with others (ie: xpra) it does not and this triggers the
wait_for_widthdrawn_state timeout:
https://github.com/Xpra-org/xpra/issues/3478#issuecomment-1237260437

Can you please clarify what wine is waiting for and why?
As per the link above, which points to the wine source for map_window /
unmap_window and X11DRV_WindowPosChanging / X11DRV_WindowPosChanged, it is
really not clear to me why the window would not be unmapped when receiving
WM_DELETE_WINDOW.