We found wiggle which runs animate and animate for certain slow animations were wobbling (sort of jittery) on mobile if an emitter was running or had run even if it was disposed.
Finally figured it out. The Emitter on mobile auto caches and if cached, we set the snapToPixel true - this was not set back to false when the emitter stops running so we will do that an patch ZIM 018.
Interesting bug - sort of been at it for the last couple days.