Feature request: dark mode still flashes bright white

Hello. Thank you very much for supporting native Dark Mode as soon as it has appeared in QT.

With dark mode enabled on Windows 10 in the 4.x nightly build I've noticed that VLC starts as a fully white rectangle before it renders/draws the dark mode interface. This behavior invalidates a lot of the benefit of having it.

As someone who suffers from migraines a frequent trigger is being flashed by sudden bright white window in a darkened room. VLC is especially notorious because it starts in window size that it was last closed so if you watched a movie a few days ago and want to listen to a song you are launching a 1080/1440/2140p maximized white window sending you straight to hell for the next 48 hours.

If this is not a hard limitation of the Windows API an expert/advanced level setting to make it dark gray or something would be very welcome.

Thanks.