So I recently upgraded from Blender 3.2 to 3.4, and sadly discovered that my GLTF models no longer show vertex transparency in three.js. This only applies once I save from the new Blender, the old .glb files still work.
Looking in Blender, I can see that the data still exists - there’s a color attribute called ‘Col’. But when I view the model in the GLTF viewer, it no longer shows the materials as having vertex colors.
I know this is probably more of a Blender issue than three.js, but I wondered if anyone has a quick fix which will get me back on track without having to re-author my models.