color rendering will fail when using the GroundPrimitives and geometryInstances are arrays

[Waylawww]

The ground color rendering will fail when using the GroundPrimitives and geometryInstances are arrays

Sandcastle example:
viewer.scene.groundPrimitives.add(
new Cesium.GroundPrimitive({
geometryInstances: [],
classificationType: Cesium.ClassificationType.TERRAIN,
})
);

Browser:

Operating System:

[ggetz]

Would you be able to include a Sandcastle example that replicates the issue? That would help us give us more context to determine the issue. Thanks!

[Waylawww]

The same as GroundPrimitive Render Error #11291

[ggetz]

Thanks @Waylawww. I'm going to close your issue now to keep the discussion in one place. If you have any further input on this, please post it in #11291 instead.