[Bug 51649] New: SMplayer does go fullscreen when it's double clicked, but the playing video stays small in the top left corner

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51649

Bug ID: 51649
           Summary: SMplayer does go fullscreen when it's double clicked,
                    but the playing video stays small in the top left
                    corner
           Product: Wine
           Version: 6.15
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

Created attachment 70509
  --> https://bugs.winehq.org/attachment.cgi?id=70509
console messages

I can install and run smplayer, and start a movie. Then I see the movie in a
window, and all in well.
Next I double click on the movie. Now SMplayer does go full screen, but the top
row of controls is still visible, and the video does not get bigger, it's just
the top left pixes that are the movie, the rest of the pixels is black.

Steps to reproduce
$ rm -rf ~/.wine
[cedric@cedric ~]$ wineboot
$ wine ~/Downloads/smplayer-21.8.0-x64.exe
$ wine ~/.wine/drive_c/Program\ Files/SMPlayer/smplayer.exe
Open a movie
Double click on the movie.

My versions:
smplayer-21.8.0-x64
$ wine --version
wine-6.15-123-gbe8501ac6f1
$ uname -a
Linux cedric 5.13.10-arch1-1 #1 SMP PREEMPT Thu, 12 Aug 2021 21:59:14 +0000
x86_64 GNU/Linux