I’m creating my own tileset and encountered some odd rendering behaviour with a few tiles.
Not certain if I am missing anything, I decided to check a few other programs:
Cesium viewer within VSCode gltf Tools preview
Khronos gltf validator reports no issues. I only started getting this issue when I decided to merge objects by colour.
See the attached offending file:
16x_-16_0_16_G0.10.glb (3.6 MB)
There’s a handful of them within my tileset.