In Unity 6 builds, particle systems configured with the Ring Buffer Mode set to Loop Until Replaced no longer behave as expected.

In Unity 2022, when the ring buffer capacity was exceeded, existing particles remained until they completed their loop, while new particles continued to spawn.

In Unity 6, once the ring buffer capacity is exceeded, new particles stop spawning.

Because of this issue, my avatar gimmick does not function correctly in the Unity 6 version.

I have attached a comparison video showing the behavior in the current build 1886 and build 1896.