Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: AMD Radeon R9 200 Series ATI Technologies Inc. 4.5.13587 Core Profile Context 20.2.2 26.20.15019.19000
Broken: version: 2.91.0 Alpha, branch: master, commit date: 2020-09-04 21:32, hash: rBcf0ba59e311b
Worked: (newest version of Blender that worked as expected)
Short description of error
I was testing the dissolve feature described here. Time: "Speed of smoke’s dissipation in frames." but it seems wrong. Let me show this short video (don't look at my test about flow consistency in domain settings):
As you can see, changing the Maximum Timesteps does not change the Dissolve velocity, even changing the substeps of the inflow object doesn't change the dissolve behaviour.
But changing the Minimum Timesteps (forcing mantaflow to iterate more on each frame) it clearly messes up the behaviour. It seems to act faster than desired! It seems the Dissolve Time parameter works on steps and not frame.
Exact steps for others to reproduce the error
Bake simulations and play animation.