The communal hogger

Has anyone got that one roommate who seems to overstay their welcome in communal areas? Ie if they cook, they are in there for 3 hours minimum or if they are defrosting something, they grossly defrost stuff in bags on the worktop or in the sink which is kinda gross. Yesterday, they had running hot water over their meat in the sink, expecting no one else to use it until they came back.

They always have the "This is mine, don't use it" attitude about their stuff as well. Despite storing it in communal areas. If they also have washing to sort out, they sort it out in the kitchen not take it to their room like everyone else does.