Quote - I just tested it in my system and it works just fine. I used the "thick gray smoke" default in Vue, without any changes, in default cylinders.

The oddness happens when you put one cylinder on top of the other (even if you turn them both into one meta object).

The answer is in the definition of "Use distance field" :- > Quote - Use distance field: when this option is enabled, the volumetric density takes into account the depth

inside the object. The density will automatically increase as you go deeper inside the object. When
this option is checked, the Field depth parameter becomes active, letting you indicate the depth at
which the density function reaches its maximum value.

This introduces a dependence on the shape of each individual object which isn't what's wanted in this case.