For some reason most of my custom models have this extremely bright light on them at all times:
another Linux user also had this problem with my models when I was using them. I thought I had fixed it. On their screen I was just a completely white silhouette. Apparently I'm supposed to decrease the texture color or ambient/spec lighting, but if I do that too much it will look like garbage for people running Windows.
The only unaffected model I could find is
/fortnite/fennix/fennix.rwxKnown affected models are:
/wipeout/feisar/BNGfeisar.rwx/wipeout/icaras/BNGicaras.rwx/ranga/ranga.rwx/amaterasu/amaterasu.rwx (this one is completely white minus the ink outlines)
No one else's RWX looks this bad, what do I do? windows looks fine
EDIT: friend running Windows had the same issue, asked him for his specs. Turns out everyone with this bug is using an AMD processor. It has nothing to do with the operating system.
I've tested this on Arch Linux 5.18 + Intel Core i7-8550U just to be sure, and the lighting was accurate. Steam Deck screenshot is under the same OS with the same WorldsPlayer version, only difference is the AMD Aerith APU, and there it was broken. I have not tested to see if emulation could work around this.