I did(do?) have a gradient that was slightly edited from tom's example gradient shader code on the documentation page -- though the android version doesn't/shouldn't be using it at all at this point....
I think it's only on android, though the phone I used to test was fine + the PC builds arent having an issue-- At this point I think I might have to wait for the person who got this to get back to me (though I'll update the android dl to have absolutely nothing else shader-wise.)
Thank you for helping me narrow it down! ><