blocks.json not detecting additional and vanilla textures defined in terrain_texture.json

[HIPPOKLEIDES]

Describe the bug
In a resource-pack, blocks.json throws errors stating that "The texture is not defined in the terrain_textures.json", despite the texture being defined in terrain_textures.json and working in-game. This mainly happens for additional textures (eg: textures for the top and bottom of wool), but also happens for many vanilla textures (eg: cartography table textures).

To Reproduce
Steps to reproduce the behavior:

1. Add entries to blocks.json with new textures.
2. Add texture definition to terrain_texture.json
3. See "the texture is not defined in the terrain_textures.json" errors in blocks.json

Expected behavior
If new textures are defined in terrain_textures, no errors should show up when referencing them. If the textures already exist in the vanilla terrain_textures, no errors should be thrown.

Screenshots

Desktop (please complete the following information):

• OS: Windows 10

[StealthyExpertX]

Your example has a typo on the bottom right image, where "Example" should be "example"

[HIPPOKLEIDES]

Your example has a typo on the bottom right image, where "Example" should be "example"

In Blocks.json the name of the entry, "Example", should be irrelevant to this, as "textures": "example" is what references the entry called "example" in terrains.json.