“!CompareApproximately (SqrMagnitude (q), 1.0f)”
It pops up sometimes when I try to instantiate a transform prefab.
What does it mean?
It’s one of Unity’s internal assertions that, in theory, you should never see. 
I’ve found that adding extra digits into the creation coordinates seems to stop it for some reason.
How interesting! That was my instinctive solution as well. Though I never implemented it… I will try it out tomorrow.