- Automatically updated to Paper commit: 2a1871bba6d4406c61c872a2977f62e3d8863efc Use static ThreadLocal for light engine propagator The propagator has been changed so that its world may be updated. This reduces extra memory by only requiring one propagator to be cached per thread, rather than one propagator per world per thread. This change also avoids the dodgy behavior of ThreadLocal retaining references to values long after they would be collectable. Fixes https://github.com/PaperMC/Paper/issues/13234