NetworkServer.Broadcast O(N) spawned iteration removed. dirty bits for spawned without observers are now cleared when adding the first observer instead (#2923) (272bace)
#2882 UnpackAndInvoke now errors and disconnects in case of missing handler. This is necessary because messages in a batch are not length prefixed. we always need to read to the end, otherwise it overlaps into the next one, causing undefined behaviour. (86eeecc)
NetworkServer/NetworkClient batch processing now detects ever growing batches (as caused by #2882) (3e4def1)