What you want to see? - A rule that dissallows jumping in combat, as it is basically game breaking at this point. Why should we add it? -  This rule should be added for many reasons, the first, and most important, being that it it literallt game breaking. By jumping/crouch jumping in combat you manipulate the hitbox so badly that shots stop registering consitently, even if the bullet should be hitting the player you are shooting at. You mix that in with the fact that Garrys Mod already has