https://bugs.winehq.org/show_bug.cgi?id=38651
--- Comment #18 from Nikolay Sivov bunglehead@gmail.com --- (In reply to Asif Ali Rizwaan from comment #16)
As Project64 is Free software, GPL2 licensed, you can get help from Settings Sources, Kindly look into source of Projet64 to resolve this issue:
https://github.com/project64/project64/tree/master/Source/Settings
The problem is described in comment 13 and 14. If you are suggesting making changes to application itself or to wine as a workaround, then it's not the way to fix it.