My 2015, 13" MBP always stays in the same place. It is never moved. I has never been dropped. No liquid has ever gotten into it. It is completely off when not in use, and the lower part of the computer is perfectly flat. Interestingly enough, when I close the lid, it remains separated from the base by about a 1/4 of an inch. It's as if somehow the keyboard is keeping it elevated. Very strange. Screen does not itself seemed warped and is functioning well. Can't account for the reason as to why the lid won't close flush with the base. I noticed this just recently. Any ideas? It looks pretty weird. Thanks.