Why can only one texture display correctly on my model? hope everybody's well and staying safe. Complete Blender rookie here. I was hoping for some help troubleshooting an error I encountered in Blender 2.83 while trying to assign image textures to a head model I extracted from a video game (Mass Effect 3).
So this head model has four materials: eyelashes, face, scalp, and eyes. For some reason, only one material's texture ever displays correctly -- the other three just display as a random solid color.
I've tried restarting from scratch a few times, and one thing I've noticed is that the texture always displays correctly for the first material I assign an image texture to. Any material I attempt to assign a image texture to after the first material displays as a random solid color.
Here's a screenshot of the issue, if helpful. In this instance, I assigned a texture to the face material before all the other materials, so it's the only one that displays correctly:

Also, here is the blend file as well (with all the textures packaged in), if anybody wants to investigate the issue directly: https://drive.google.com/file/d/1R_Yn7RfQlKksQDSbEfTezUdB4iAYeJkL/view
This is how the character is supposed to look normally: https://i.imgur.com/WypNgRa.png
Thanks in advance to anybody who's willing to help!
From what I can tell from looking from your file, the only affected area is the hair (now that I look again, maybe the eyes too), which seems to lack a UV map. I selected the section and did a crude &quot;sphere projection&quot; unwrap and was able to get a texture on it.


The problem is, that when I connect the texture that came with it, it's not clear how it's supposed to be oriented. I tried several different unwrap methods, as well as different placements in the UV space, but I couldn't get it to line up in anywhere close to a satisfying fashion. Maybe you will have better luck than I.