KTX compression with gltfpack


I’m not sure if I used the proper tags, but
I am looking into using KTX compression with gltfpack to reduce the size of my models. However, using ktx compression seems to blow out the lightmaps only when viewed in BabylonJS. Has anyone had this experience? Any thoughts as to why that might be? Thanks!

Here are snapshots, for reference:


ktx compressed:

Have you tried in another glTF viewer (like https://gltf-viewer.donmccurdy.com/)? It should definitely work.