When loading two Gaussian splash models with overlapping positions at the same time, the model will have a flashing bug

[zhaobinJava]

What happened?

Hello，
Before loading the Gaussian splash model, I converted the. splat model file to a regular. b3dm file using GisBox. Then I used the Cesium3DTile set. from URL method to load it. When the positions of two Gaussian splash models overlap, simply drag the map and the models will flash continuously.

Reproduction steps

...

Sandcastle example

No response

Environment

Browser:
CesiumJS Version: 1.133
Operating System:

[javagl]

This was also reported in the forum at https://community.cesium.com/t/when-loading-two-gaussian-splash-models-with-overlapping-positions-at-the-same-time-the-model-will-have-a-flashing-bug/43629

[mzschwartz5]

Posted some explanation of the bug I received from @keyboardspecialist