[Bug 55046] New: ALT-TAB broken with virtual desktop and capture mouse (regression: 8.9 -> 8.10)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=55046

Bug ID: 55046
           Summary: ALT-TAB broken with virtual desktop and capture mouse
                    (regression: 8.9 -> 8.10)
           Product: Wine
           Version: 8.10
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: win32u
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

This commit broke ALT-TAB out fullscreen windows when running with virtual
desktop and "Automatically capture the mouse in full-screen windows" both
turned on.
https://gitlab.winehq.org/wine/wine/-/commit/47e208e9ec91b3ac0aca7042778ff7d...

The mouse will stay attached to the Wine virtual desktop window. ALT-TAB
actually brings windows into foreground and into focus. But you can not move
the mouse out of the virtual desktop window. And even when another window is
directly overlapping the virtual desktop window, clicks in the other window
will not be registered.

Tested with SuperTuxKart or Diablo IV.
https://supertuxkart.net/

Specifically this deleted line was needed for ALT-TAB to work correctly.
    if (ret) user_driver->pClipCursor( &new_rect, FALSE );