I have a moving liquid grid (position constrained to null), as u can see I get these artefacts appearing from border of simulator.
tried with 1 and 2 substeps , they still appear
Thanks for the report. Indeed, this is a known problem and is already logged in our system, for now the best workaround for it would be to use a large enough simulator that covers the whole area.
We will update the thread once we have something on that bug.