Basically, set materials for skeletal mesh don’t show.
I higlighted normally the materials, so I suppose they are there, but they just don’t show.
Everything looks like another project of mine, but there (it was in an older UE4 version and I converted it to the new UE4 version) the materials on the skeletal mesh work perfectly.
Found the bug.
THAT particular animated material doesn’t work. I’m unable right now to understand the reason. Please tell me if you encounter the same problem (animated material not working on a skeletal mesh).