Yeah. And there’s some help, here. Blender - Babylon.js Documentation
What version of Blender? 2.80 could be wobbly/different. I’ve heard rumors… that textures are being treated a bit differently in 2.80. Perhaps some web reading about that… is wise, especially if the tested .blender file was created with earlier Blender versions.
There’s a few ways to view the JSON .babylon file that Blender exporter produces. When everything is right, you should see the UVS array inside that file… right along-side positions, indices, normals, etc.
Here’s something I found in the Blender manual.
Perhaps swanky, uptown modeling pro @gryff …will visit, and tell us what he knows. He will want to know the Blender version you are using, too. Good luck. Teach us things you learn, please.