https://bugs.winehq.org/show_bug.cgi?id=49392
--- Comment #5 from Nikolay Sivov bunglehead@gmail.com --- Real issue is likely about missing networking support in mfplat, starting with this:
--- 00c0:trace:mfplat:source_resolver_BeginCreateObjectFromURL 0000000049224190, L"https://r1---sn-5hne6ns6.googlevideo.com/videoplayback?expire=1592347730&..."..., 0x1, 0000000000000000, 00000000002194D0, 000000004F7E37E0, 0000000000000000. ---
If browser tries too hard to enable hardware acceleration that might explain why it doesn't work in vbox for you. Session fixme is likely secondary and depends on EVR.