MRUK Plugin Scene in UE5.3 works perfectly in-engine with VR preview but fails in built game

When testing the game with Scene Anchors and MRUK it all works perfectly in-engine when we test with VR Preview. But when we build the game and launch it via quest link the space and anchors are completely wrong in positions, and they're never in the same place.

This is only in the BUILD, it works in engine.