Game [Intenal Server] Crashing when entities killed with heavily enchanted weapons

Whenever a mob or player is killed with a heavily enchanted weapon (through /give), the game's internal server crashes; mobs freeze and cannot be killed, the game cannot be quitted without task manager, respawning is glitched etc. Tested in creative and survival. Player is still moveable, however nothing can be interacted with and commands no longer work.

Please fix this as I have an important world using many command blocks with those /give commands