Bugfix: OcclusionGroups - fix NRE when moving out of group with a sleeper - replaced with a IsVisibleFromFar check - also reworked teleportation logic via IsVisibleFromFar, as that's more correct - also IsVisibleFrom range check was wrong, so fixed that Previous code relied on subscriber to check if move-out-of-bounds occurred, but sleepers don't have a subscriber, so it NREed Tests: moved away from a cell with a sleeper, checked internal state