Some settings on ellipsoids cause DeveloperError: All attribute lists must have the same number of attributes.

[sroche31]

What happened?

I found this error with an ellipsoid that stops the render of the viewer.

Sandcastle example

I managed to reproduce it with different parameters on sandcastle here.
And here is an other example.

Call stack :

DeveloperError: All attribute lists must have the same number of attributes.  
Error  
    at new DeveloperError (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-JJZWDROM.js:36:11)
    at Geometry.computeNumberOfVertices (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-ARYRHDEB.js:147:15)
    at updateGeometryAfterSplit (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-TUZQG4RW.js:1700:45)
    at updateInstanceAfterSplit (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-TUZQG4RW.js:1734:18)
    at splitLongitudeTriangles (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-TUZQG4RW.js:2163:3)
    at GeometryPipeline.splitLongitude (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-TUZQG4RW.js:2704:7)
    at geometryPipeline (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-N6DVKXZD.js:219:34)
    at PrimitivePipeline.combineGeometry (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-N6DVKXZD.js:373:18)
    at combineGeometry (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/combineGeometry.js:54:45)
    at onMessageHandler (https://sandcastle.cesium.com/Build/CesiumUnminified/Workers/chunk-LNTUIO55.js:60:28)

Browser: Chrome Version 141.0.7390.55
CesiumJS Version: 1.134.0

[lukemckinstry]

Thanks for the report @sroche31, confirming I can see this in the sandcastle too. Can you provide any more context to help narrow down, did this work in previous versions of Cesium? Have you only seen this with ellipsoid entities so far or observed it more broadly?

[sroche31]

Unfortunately I didn't have any more information to provide. I just discovered this bug on an actual project, so I don't know about the previous Cesuim versions. Also, I only noticed it with ellipsoid entities for now. Sorry !