I made a gimmick that uses multiple Unity Default Constraints in one single object.
In order, there are 1 Parent Constraint (OFF by default), 1 Rotation Constraint (ON by default) and 1 Position Constraint (ON by default) and I use animations to toggle only the Parent Constraint ON to snap the constrained object to the Parent Constraint position.
It works fine when I test in Unity 2019 using Gesture Manager, but when I test it in game, the Parent Constraint doesn't get toggled, instead it seems that one of the other 2 components gets toggled instead.
When I move the Parent Constraint from the top position to the bottom position, then it works as intended.
It appears that when Unity Constraints get converted to VRC Constraints, if one object has multiple constraint components and you toggle only 1, only the bottom component will be toggled.
I've been selling this gimmick for over a year and it has sold many copies so everybody will be affected by this bug.