[Bug 56278] New: wayland: dropdowns is rendered as toplevel

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56278

Bug ID: 56278
           Summary: wayland: dropdowns is rendered as toplevel
           Product: Wine
           Version: 9.0
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

When using the wayland driver, dropdown menus are rendered as their own
toplevel windows.

On tiling window managers (e.g.: swaywm), this results in it being tiled just
like any other window. I can't imagine that they would be placed correctly on
stacking window managers either.

I confirmed with lswt that dropdowns are effectively rendered as toplevels. An
xdg_popup should be used here instead:
https://wayland.app/protocols/xdg-shell#xdg_popup

The weirdness in behaviour can be reproduced with:

- wine reg.exe add HKCU\Software\Wine\Drivers /v Graphics /d wayland
- winecfg
- Go to the desktop integration tab and click on any dropdown