Hand tracking: hands are present but render only initialises on second play (Unity).

I have a persistent issue where the rendering of hand tracking is all messed up.

In the photo, the hand colliders and interactions are fine (I am able to grab the slider, it changes to green when grabbed, and changes it position), but the rendering of the hand itself is in the wrong position. This usually happens on the first play and after stopping and playing again the issue fixes itself (usually, but about 1/15 times it will re-occur).

Any body have any ideas? Quite new to development so any help is appreciated. Thank you 🙂 

Unity: 2020.3.21f, Oculus integration V34.