glTF Binary imports failing to instantiate on 4.4-latest

[CreatedBySeb]

Tested versions

• Reproducible in 4.4.dev [108c603]
• Not reproducible in 4.3.stable

System information

Godot v4.4.dev (108c603) - macOS 14.6.1 - Metal (Mobile) - integrated Apple M1 (Apple7) - Apple M1 (8 Threads)

Issue description

glTF Binary models do not appear to be importing correctly in 4.4.dev [108c603]. Dragging a model with the accompanying Texture folder (tested using two Kenney.nl 3D model kits a, b) into the Godot Editor's file manager will copy them successfully, and double clicking on the imported model will display it correctly in the Advanced Import Settings preview, however attempting to instantiate the model into the scene results in an error Failed to instantiate scene state of "res://chair.glb", node count is 0. Make sure the PackedScene resource is valid. not present in 4.3.stable.

I don't think this is a duplicate of the other glTF issues but I am unsure if it may be related.

Performing git bisect good 4.3-stable && git bisect bad 108c603f9 indicates 7a20ba9 is the culprit

Steps to reproduce

• Open attached MRP
• Open test_scene.tscn
• Attempt to instantiate chair.glb in the scene
• Model fails to load in 4.4.dev [108c603] with error: Failed to instantiate scene state of "res://chair.glb", node count is 0. Make sure the PackedScene resource is valid.
  • If you attempt to then load the project in 4.3.stable, chair.glb will still not instantiate until it is reimported, then it will instantiate but displays as a wireframe (not sure why this is)
  • Creating a fresh project in 4.3.stable and importing the chair.glb has no issues, and removing the .godot folder in the project and re-opening it in 4.3.stable also resolves the issue

Note: This only occurs if the model has been imported/re-imported in 4.4.dev, if it is imported in 4.3.stable and then the project is opened in 4.4.dev it works completely fine until you re-import chair.glb, after which the scene can no longer be re-opened

Minimal reproduction project (MRP)

gltf-binary-mrp.zip

[CreatedBySeb]

This actually appears to have just been solved by #96207 which I only realised after pulling the latest master to start trying to fix it, unlucky timing