Styling broken for secondary feature ID set in San Francisco Ferry Building

[j9liu]

What happened?

The San Francisco Ferry Building has two different feature ID textures that are visualized in this Sandcastle. It also has two property tables, "labels1" and "labels2"

We can visualize the first one (named _FEATURE_ID_TEXTURE_0) correctly with "labels1" in 06_CesiumMetadata from the samples. But attempting to use the second feature ID texture (_FEATURE_ID_TEXTURE_1) gives an incorrect monochrome result. This happens regardless of whether you're interfacing with "labels1" or "labels2", so it appears to be a bug with the feature ID texture in particular.

Environment

Cesium for Unreal version: v2.21.0
Unreal Engine Version: 5.4+
Operating System: Windows 11

Reproduction steps

1. Start with 06_CesiumMetadata in the Cesium for Unreal Samples.
2. In the UCesiumFeaturesMetadataComponent, rename _FEATURE_ID_TEXTURE_0 to _FEATURE_ID_TEXTURE_1. (or alternatively, use the Auto Fill button to pick this up).
3. Refresh the tileset.
4. Click Generate Material. You may have to reconnect the nodes like so:

5. Apply the material. Note that the monochrome result.

Supporting evidence