My left hand is a very old HTC Vive controller. I was unable to let go of the grabbed package for the rest of the game with it lol My right Index controller worked fine though. Not a real complaint, but thought it was funny.
Kudos to you for making a grab system that feels nice though, especially if you made it from scratch. Not a fan of throwing stuff in VR to be completely honest with you, but the physcics system made it bearable.