[Bug 20865] New: Steam login window jumps around the screen when moved

http://bugs.winehq.org/show_bug.cgi?id=20865

Summary: Steam login window jumps around the screen when moved
           Product: Wine
           Version: 1.1.33
          Platform: PC
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

When running steam in Wine, at login screen if you move the window around, it
appears to jump across the screen in a jerky manner, especially if the cursor
is moved quickly.

A trace using WINEDEBUG='+tid,+event,+x11drv,+win,+relay' (attached) shows that
sometimes the X11 driver is getting ConfigureNotify messages after the window
has moved but they seem to contain the wrong values for the position on the
window.  Sometimes the window is moved by the ConfigureNotify handler back to
where it was originally, just for Steam to move it again.

It is possible to see this if you parse the log with: grep -E
'win:SetWindowPos|x11drv:sync_window_position|event:X11DRV_ConfigureNotify'