I can't repro this bug. Since this is 4 years old i'm going to assume whatever caused it is fixed now.
Ok, will consider it a feature then. At least it's neither a nodes nor a physics bug.
Apparently the vorticity
setting is passed through to Mantaflow's vorticityConfinement
function. I tried finding any information on what that function does, but can't even get API docs for the…
@fclem Ah sorry, i got that wrong. But looks like the workbench engine (and presumably others) also has a check like this to disable fluid drawing for instances: https://projects.blender.org/blend…
Had a closer look again: This appears to be a deliberate "feature" in the drawing code. The fluid sim cache is loaded correctly, but the drawing code explicitly disables drawing of volume data for…