It is not as I looked at it last week and the mixer is a single mesh, so you can't rotate the drum. I was thinking at least it should have a particle effect, but the code for that type of object did not support it and ten seconds later I was distracted by something else and several other things since then.
That does not really matter yet, as several systems have changes in the works and bugs are being found daily in them, then back around to fixing.
Should be closer together.
Not in A21.