[Bug 54888] Transparent window are displayed as black background window on wine

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=54888

Fabian Maurer  changed:

What    |Removed                     |Added
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--- Comment #1 from Fabian Maurer  ---
> Some transparent windows are displayed as black background window. Here is a
> simple WPF window program that can reproduce this issue. On Windows, all
> parts are transparent except for the graphics and text in the middle, but it
> has a black background on Wine.

I tested on my Windows VMs, but there is no transparency.