Idea, bug, New mob

When the player places the cushion on a staircase and sits on it, the player moves too far backward. I would like you to fix this issue. I also have an idea for a new mob for this biome: it could be a brown bear because it fits the biome very well. Another addition that could be good for the game would be light injuries. When the player takes damage, instead of only the hearts decreasing, the player and the armor could show signs of wear, like an injured hand and cracked armor.