Weapons and Player's body not following the player hitbox

Description : Sometimes the Weapon or Player’s body wouldn’t follow the player’s hitbox and since the player body wasn’t moving the backpacks wouldn’t move either BUT the backpacks hitboxes also wouldn’t move so everybody could take the players stuff in the backpack (Everything i mentioned before is showing to everybody but the player itself, from the pov of the player nothing changed so i assume it’s something server side).

Reproduction Steps : I don’t know i just play…

Server : A FrenchTown Tale

Time : Around 10:00 pm (French time, EST)

Discord Username : rtdflo faucheur or Petit renard masquée