Can't sneak when in a block.

Description: When the player’s legs are inside of a block, the player is unable to crouch or sneak, with none of the effects of sneaking except being unable to walk off the block’s edge. This happens as long of the block has a physical collision box that the player’s legs are inside of, even if the collision box is suspended off the ground.

Steps to Reproduce: Place with commands, move, or otherwise get a block with collision inside of the legs area of the player, then observe how sneaking becomes impossible.

Expected result: The player should be able to sneak while inside of a block that does not make them go into crawling.

Actual result: Attempting to sneak while inside of a block does not work or have any other effect than preventing the player from moving off the block from the sides.