Why does this part float up?

Bug Reports Engine Bugs
#1

floaty thing.rbxl (15.6 KB)

I can’t figure out why this part floats up. There are no forces that would push it upwards. It is connected to the ball with AlignPosition, which is connected to an invisible brick with another AlignPosition.

Edit: If I anchor the ball it works. ??? Also if I set ReactionForceEnabled to true it has the correct behavior

#2

Ok ok, we have a bug in AlignPosition (and AlignOrientation). The fix is in the pipeline already and will be enabled in 2 weeks. Until then, on the constraint, make sure to check ReactionForceEnabled.

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#3

This bug was fixed months ago.

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