CESIUM_primitive_outline: Maximum number outlines per tile?

Hi, I’m experimenting with CESIUM_primitive_outline. I’ve got the impression there is a maximum number of outlines per tile somewhere defined? I’m using Cesium 1.97.

Demo: https://bertt.github.io/cesium_3dtiles_samples/samples/outlinemax

On most buildings the triangles are drawn, but sometimes not:

Somewhere above 18000 triangles I start to observe these buildings without outlines.

Fixed it, by using UNSIGNED_INT (5125) instead of UNSIGNED_SHORT (5123) as encoding type.

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