Put barrier blocks in front of the shelves to prevent players from gaining access up on the shelves. The shelves are very difficult to access, especially for those who don’t know how to get up here, or are completely unaware such a spot even exists, leading to a prolonged game ending in a loss.
It is very unfair for a lot of players, and just ruins the flow of the game, especially since remnants is already a big, and very difficult map to play as murderer as is. There is also a hiding spot behind the crate next to the blue circle in the second screenshot where players can hide behind.
(The replay in the screenshots also shows a player using this spot to hide in for a large majority of the game for another example of how overpowered this spot is.)