https://bugs.winehq.org/show_bug.cgi?id=41369
--- Comment #9 from Gijs Vermeulen gijsvrm@gmail.com --- (In reply to Louis Lenders from comment #8)
This is just an idea, so it might be terrible:
Maybe it would be a good idea to send the idl, stub dll and stub interfaces patches to upstream but make everything return E_NOTIMPL (like other stub interfaces). Then you could put patches to change these E_NOTIMPL to S_OK in staging to check for regressions. When it is almost certain that the interfaces faking success don't cause any regressions, then maybe it can be changed upstream as well.