Fix bottle removal drains whole system

No not normal, there's a check valve in the bottle that isn't sealing. Taking it apart and cleaning it would probably fix it. Need to get a spanner wrench or something to remove the valve from the bottle to get at where you'd take it apart. I got lucky and just some wood blocks in a vise was enough to just grab the valve and spin the bottle off of it. (They used loctite at factory)