Hello,
I imported in Blender 2.8 an object (dowloaded link below) and everything was showed correctly
Then I export to gltf + bin + texture with below config
I just export object without animation
Files after exported
I try loading with https://gltf-viewer.donmccurdy.com/
Object https://www.turbosquid.com/3d-models/free-wooden-cabin-3d-model/786883
Does it work if you export with a setting other than GLTF Separate, like a single GLB file? It looks like one of the images has a bad prefix (.jpg.jpg), which might be part of the issue. Might be worth filing a bug on the exporter if it’s naming the file that way.
It working fine with single GLB. As you mentioned, so how I fix this 
I try rename material UV 
Exported
But it still same issue
Could you share a ZIP with the .blend file and the generated glTF output?
I had to re-import the images after opening the Blender project (I think that’s normal) but then it did export correctly. Still had .jpg.jpg in the names but they work in my viewer anyway. To clean that up you can just rename the textures in the Blender sidebar from WoodCabinDif.jpg.001 to just WoodCabinDif or something.
Not sure whether there’s a bug to report with this or not. 