Gray 2D classes with Particles

Hi all,

I recently upgraded to version 4.2.0 and when I ran a 2D-classification Job I would sometimes get several classes which are completely gray but there are particles inside those classes. When I select them and start a new classification, the same thing happens again, but again not with all classes, only a small number.
I added an image of the 2D-classes that I got on a dataset I tested.

Does anyone have an idea why this happens?

Edit: I just tested some more and it seems that this only happens when I use 2 GPUs, but not when I run the job with only 1 GPU.

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It’s a known issue, update to the latest patch and it should work again! (Patch 230302 is available for CryoSPARC v4.2.0)