Motion tag does not work with NoGravity tag

Please read before you dismiss this as a duplicate of an unrelated issue.

First of all, I acknowledge that this is a duplicate of MC-80756, MC-130460, and MC-137164. (I don't know how to go about reopening those closed issues myself, if I even can.)

This is most certainly not a duplicate of MC-75979, as the responses towards it were specifically related to the NoAI tag, and not the NoGravity one.

Is NoGrav rendering things immobile WIA/unfixable? If it's WIA, I'd like to point out that you could just NoAI if you wanted to stop motion, so NoGrav doing the same is redundant/unhelpful and gets in the way of making floating objects move smoothly (i.e. without repeated teleports).

Edit: Realized armor stands don't have the NoAI tag. Maybe add an additional tag to armorstands related to movement ("immobile"?), or just give them the NoAI tag for the same purpose.