GLB Normal Maps Broken in 4.16.1

Looking for some insights to see if others are having this problem and if this is a bug or something else:

I have found that if a GLB model has a Normal Map applied, the model surface normals do not display correctly in 4.16.1

Here is an example with a GLB bag + Normal Map:

I have found a working solution - export the GLB with "vertex tangents applied to mesh. here is an example of this:

This is a working solution, however not ideal as vertex tangents effects GLB file size
I did not previously have to enable export "vertex tangents applied to mesh”
This points to a possibility that something has changed in how Lens Studio interprets surface normals.
I have not seen any information on this in the latest update notes, and so far have not received any response from support.
Additional workaround I have found is to export model as OBJ/FBX and configured the material with textures manually, which also works, however I have specific reasons for wanting to utilize the GLB format

Anyone have any information or insights into this??

Thanks!