The bug
When the player is at the same block/position as a closed door or trapdoor, and the player is inside of that door (clipping through it), upon sneaking / crouching, the sneak animation does not show up at all, even though the player is sneaking (the player's speed decreases, and becomes the same as the sneaking speed, therefore the player is sneaking).
To reproduce
Place a door
Open the door
Go stand at the position of that door, so when the door closes, you end up clipping through that door.
Close the door.
Attempt to sneak.
Move while sneaking.
Linked issues
is duplicated by 8
MC-160834
Crouching then closing a door onto yourself uncrouches you
Resolved
MC-163241
crouching perspective issues
Resolved
MC-179259
Hitbox Misaligns when you walk under a slab and a trapdoor
Resolved
MC-192614
Fast walking while crouched in door hitbox and under slab
Resolved
MC-213649
Sneak-Bug with Hopper & Trapdoor
Resolved
relates to 2
Attachments
Comments 14
This bug has been in the game for a very long time, according to my tests, and I have personally used it for PVP, partcore, and escape rooms. Because of its age and uses, I do not think Mojang will take action. But who knows?🙂
This issue is a bit broader that what is mentioned in the report. This does not only affect entering sneaking, but changing between all heights. Whatever height you were at before being clipped inside of the block is what you will be stuck in. For example, if you crawl under a trapdoor, then move against the block that the trapdoor is attached to and close the trapdoor again, you will be stuck in crawl mode. See the attached screenshot.
Furthermore, from my testing, this does not only affect the animation, but behavior as well. By following the steps to reproduce the bug in from the report, I still moved at walking speed. Additionally, this affects the player's hitbox - when attempting to sneak in a door, the player's hitbox does not change; when closing a trapdoor on the player in crawl mode, the hitbox of the player is still in crawl mode. The only effect of sneaking that I experienced when in a door was not falling off the edge of blocks.
Also, can confirm in 1.20.3 Pre-Release 2.
still in 1.15 pre 6