SurfaceAppearance - Maps not loading in

Why won’t some textures such as Normal, Roughness, and Metalness load in? Sometimes it happens so that the textures just can’t load in, not even their thumbnail.

Seriously, the images have loaded in on Roblox, you can see one of them here, the normal map:

And it loads in on images in-game and all, but not on SurfaceAppearence. To be clear I’ve gotten multiple other textures to work on other things etc. This must be a glitch, what to do?

(Edit)
I also recently started to have other textures not being able to load in when playing the game, but they worked fine in Studio.