After today's rebase, I found a workaround for creating new documents. You can open an existing document, then click on the home tab, and create a new document in one of the tabs. There seems to a bit of UB left, but it's better than nothing.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/2377#note_27257
This fixes a bug in the game "Nioh: The Complete Edition", where the videos after the first video are played too quickly.
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v2: quartz: Set filter sync source in FilterGraph2_AddFilter.
https://gitlab.winehq.org/wine/wine/-/merge_requests/2380