SimpleMoveTo uses NavMesh may not produce “exact” result, as the point of “goal” maybe unreachable, like some where floating in air.
It could be pretty difficult if your block with socket can be arbitrary anything, so usually closest point is used.
But teleport should be exact, but for the root component’s transform, so it may not be seem to be exact.
I created a volume spawn and tested teleport my spawned object, it’s on spot all the time.(I disabled simulation so all items will just float in air, and I check if they collide with any edges of the volume.)
So if teleport not working, it must be either pawn moved after teleport, or the input transform is not exact.