[Bug 49500] New: Wine is not displaying any windows

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49500

Bug ID: 49500
           Summary: Wine is not displaying any windows
           Product: Wine
           Version: 5.0
          Hardware: x86
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: -unknown
          Assignee: [e-mail]
          Reporter: [e-mail]
      Distribution: ---

If no monitor attached, wine is not displaying any windows.

Trying to run winecfg.

On wine-4.0.3 all works as expected.
On wine-5.0 & wine-5.11 no window is displayed, although programs seems to
work.
In both cases, running winecfg via terminal, produces an output.

Setup: start X via /etc/init.d/xdm; connect to display via x11vnc when
necessary.

Workaround1: do xinit -- /usr/bin/X -extension RANDR.
Workaround2: do xinit -- /usr/bin/Xvfb

Here is my xrandr output for default Setup:
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 4096 x 4096
VGA-1 disconnected primary (normal left inverted right x axis y axis)

Here is my xrandr output for Workaround 2:
xrandr: Failed to get size of gamma for output screen
Screen 0: minimum 1 x 1, current 1280 x 1024, maximum 1280 x 1024
screen connected 1280x1024+0+0 0mm x 0mm
   1280x1024      0.00*

I think this is enough info to reproduce.
Let me know what logs to provide.