You can see it here. Happens to me all the time. Exporting from Blender using gltf. Some objects completely white, others, like the one in the foreground, are partly white.
To see if it is related to Blender export or UE import can you look at your gltf in
Khronos viewer and check if it shows white there already.
Can you also share the gltf?
Good to know there’s a viewer.
I actually did solve this by stripping down the nodes to the bare minimum in Blender. I think I was using mix shader nodes on the problem objects.
Thanks.
yeh. that’s the gltf spec. it only supports bare principled node sockets. does not include entire graphs in the material data.