https://bugs.winehq.org/show_bug.cgi?id=53863
--- Comment #4 from pernegger@gmail.com --- Still present in 8.0-rc2.
The game LUNARiA (by the same developer) is also affected in the same way. In fact, I wouldn't be surprised if all games using (a recent version of their) SiglusEngine were: https://vndb.org/v?f=N18fwSiglusEngine- .
Is there any way to get this fixed in time for 8.0? From what I understand the offending commit is "just" a performance optimisation?