I don’t know if they somehow fixed the issue already, but I haven’t had this issue anymore in a while so far.
I do remember having the file (libgstflac.so) in the wine runner as well, but a different size to the system gstreamer’s libgstflac.so. So I just replaced the one in the wine runners (both from the lib and lib64 folders). Can’t tell if it worked or they just fixed it lol.
Please let me know how it goes. Mine’s been running ok so far after the workaround with libgstflac.so. (if the file exists in the wine runner already, rename it for backup and replace it with the system’s version of libgstflac.so found in /usr/lib/gstreamer-1.0/ ) I straight up copied in/replaced both of the ones under the lib and lib64 folders for the wine runner with the same system libgstflac.so file because I got sick of it.
I don’t know if it worked because of the workaround or if someone fixed it for arch linux though. LOL. Good luck!