Just found another thing with baking on 2.90 - if I'm changing the initial fuel level (0-1.3 bezier) for example and not starting from 1.3 - it's dissolving before reaching top of the domain, than it probably will not fail. Not sure how it's related, but maybe it's a workaround for now - just make sure the fire particles not reaching the domain limits.

Hello Guys, just found quite the same during working on BlendNet addon (https://github.com/state-of-the-art/BlendNet/issues/57), it's not critical - but definitely will be great to have it fixed.

I just tested the latest blender-2.91.0-ba188e721899-linux64 build:

So, I checked recently released 2.90 - even worse it crashed on 2th step "baking" (5th domain bake, 215 frame):

$ blender
found bundled python: /home/user/local/blender-2.90.0-linux64/2.90/python
Read blend: /home/user/tmp/mantaflow/mantaflow-render-test.blend
terminate called after throwing an instance of 'Manta::Error'
  what():  can't clean grid cache, some grids are still in use
Error raised in /home/sources/buildbot-worker-linux_centos7/linux_290/blender.git/extern/mantaflow/preprocessed/fluidsolver.cpp:33
zsh: abort (core dumped)  blender

Hello Guys, anyone could reproduce? @Raimund Klink (Raimund58)

Simple test blend file:

Ok, just reproduced the issue on a simple blend file and default blender 2.83.5 . Will reproduce one more time from nothing and will attach the steps to reproduce and the file.

Looks like it happening once per ~150 frames, still trying to figure out the minimal configuration.

So the change will be added only to 2.9? Do you have plans to integrate it to 2.83 LTS?

Yep, affecting me too. I think it's somehow related to the prefetch frames mechanism - when it's working on the erasing strip there are ~100% chance to crash.