https://bugs.winehq.org/show_bug.cgi?id=50894
--- Comment #6 from Alexandre Julliard julliard@winehq.org --- (In reply to Roman Pišl from comment #5)
however:
cd windows\sysnative c:\windows\sysnative>rundll32.exe wine: could not open working directory L"c:\windows\sysnative\", starting in the Windows directory.
I would expect no message and working directory windows\system32.
That's what will happen if you run a 32-bit app.
A 64-bit app will get c:\windows\sysnative as current directory, which is an invalid path in 64-bit, so the current directory will be broken. It's the same on Windows.