3D Export From Structure Blocks Shows Missing Texture

Steps to Reproduce:

1. In Minecraft: Bedrock Edition (Windows) 1.21.90+, obtain a structure block, place it, and change the mode to "3D Export" from the drop down.

2. Resize the bounding box area to include a structure containing blocks (entities won't be exported) using the size and offset XYZ coordinates.

3. Click the "Export" button at the bottom of the menu and save the GLB to your files.

4. Open the GLB file in any supported 3D software (e.g. Blender).

Observed Results:
The GLB model is missing textures for almost all blocks. Blocks appear either solid black or pink (or blue in the case of water; see first attached image). This same result occurs when exporting from the structure block with or without texture packs, in different worlds, and with different structures.

Expected Results:
In versions before 1.21.90, the exported GLB would contain the appropriate textures for each block (see second attached screenshot).

Impacts:
This limits users who rely on these feature in modeling and 3D design, typically used for thumbnails or creating a portfolio. Therefore preventing people from earning paid commissions, disallowing creators to provide a living or financially support themselves.