Animating UI (4.6) parameters is creating garbage keyframes on child objects

I'm currently unable to create the screen transition I'm trying to because of what seems like a pretty debilitating animation bug. The situation is a summary screen with a backplate, a "Stage Cleared" message, clear time, stars collected and a little panel to earn you extra coins. I am trying to animate all the elements coming from off screen.

The frustrating t$$anonymous$$ng is that I can only animate the Stage Cleared message and the backplate without garbage keyframes appearing on c$$anonymous$$ld object parameters. As soon as I, say, add a parameter to animate the stars collected object's position, all transform parameters for the three stars (c$$anonymous$$ldren of the stars collected object) appear in the animation editor with keyframes. What makes t$$anonymous$$s really smell like a bug is that dragging the time scrubber around the timeline has a tendency to create more of these garbage keyframes.

Just for reference sake. I have tried creating new, empty container objects in w$$anonymous$$ch to nest the problematic ones but t$$anonymous$$s hasn't helped.