I'm using a huge modpack and included BetterFPS and Surge to improve performance, but when I installed VanillaFix my skin won't show up. I checked the modpack again and it uses a client-side skin mod. I tested it in a different custom modpack with only VanillaFix and the client-side skin mod and it won't show my skin.

Note: All versions except the first instance (VanillaFix-1.0.0-1) doesn't show my skin.

I asked my best friend to help me with this and he experience the same bug with VanillaFix so I can confirm that this isn't just my pc.

Thank you for improving our minecraft performance and especially large modpacks.

Best Regards
-FaithfulSkies

You have to disable in config of VanillaFix "Optimisations and Vanilla bug fixes"

Have this same issue, @M1chanTheCreeper you mean disabling this bugFixes? i put it on false