[MC-147305] Player crouches with a delay

When I press the sneak button, player crouches with some delay.

Linked issues

is duplicated by 8

MC-147358 Crouching Resolved

MC-147397 Sneaking animation is delayed Resolved

MC-147418 shifting takes a bit longer than usual Resolved

MC-147527 Sneaking animation is delayed when flying in creative mode Resolved

MC-147945 Delay when crouching. Resolved

3 more links

relates to 1

MC-148088 Fishing line doesn't adjust to the player's sneaking animation Open

Attachments

Comments 18

Nope. 2019-04-03T20:46:30Z

Did some testing and there is a reproducible 0.2 second (4 tick) delay between the player pressing the crouch button and the character sneaking

[Mod] Neko 2019-04-03T22:35:10Z

Can confirm. This is easily noticed while spamming the sneak button. It just doesn't have the same effect anymore.

Random Guyson 2019-04-04T01:33:43Z

Confirmed. Amount of delay varies, but is usually quite long and noticeable.

Daniel PRO 2019-04-04T03:30:48Z

Confirmed.

Gerrygames 2019-04-06T10:05:45Z

I just found out what the technical reason is for this. The client does not update its own metadata when the player starts/stops sneaking. The metadata has to be updated by the server. Only after the metadata has been updated, the client displays the animation (and activates part of the functionality). The delay is caused by network delay and due to the server updating the metadata not until the next tick.

I guess the responsible developer will probably be aware of this, but I wanted to mention it anyway. Maybe it helps 🙂

FYI: I noticed this, because I wasn't updating the clients own metadata on my custom server software at all. This worked fine in versions prior to 19w14a (or at least in 1.13.2), but in 19w14b sneaking wasn't working at all. After removing the check for not updating the clients own metadata, the issue vanished (though sneaking is obviously still delayed).

8 more comments

Gravinser 2019-04-10T15:32:29Z

can reproduce in 1.14 pre-release 1

Nassim Jahnke 2019-04-10T15:42:46Z

The delay is shorter, but still around 2, sometimes 3 ticks (and will be much worse on servers with just a little bit of lag), even in singleplayer on a flat world (= without much going on). Also, why check for people STARTING to sneak in the server? Wouldn't only checking the unsneak be sufficient to prevent any client abuse?

Lunos Ouroboros 2019-04-10T16:44:13Z

Can confirm, it still happens in 1.14 Pre1.

Gerrygames 2019-04-10T18:50:55Z

I can also confirm that the delay is still noticable in 1.14 pre release 1.

(Un)Sneaking should not be handled serverside. If serverside checking is really necessary, the initial check should still be performed by the client and then can be corrected by the server. This does guarantee low latency in all cases that were checked correctly by the client. If the clients check fails unsneaking will be a bit weird, but it will end up in a correct state after the server updates it.

Morgan Bonds 2019-04-11T03:20:30Z

Still confirm that it's still around in 1.14 pre-release 1. And I'll be honest- I haven't hated something in an update more, makes building in creative and with command blocks super frustrating.

wobst.michael 2019-04-11T15:02:28Z

Confirmed that this is still a major issue in 1.14 pre-1. In the worst case, depending on lag, it can take several seconds until the player starts to sneak.

gaspoweredpick 2019-04-12T03:27:56Z

There are still some top priority glitches in 1.14 Pre-Release 1 that need to be fixed. This glitch is no exception (but less of a priority than the chunk loading one known as MC-138114); countless players will die from falling off cliffs, into lava, or into any other dangerous situation thanks to this (even if they don't lag). If they don't fix these game breaking bugs, many players will complain and possibly won't update to 1.14.

Chandler Beeman 2019-04-13T14:14:16Z

Still in pre release 2

Xander Kooks 2019-04-13T19:10:39Z

Delay WAS more or less resolved in pre-1 but it was still there.

Confirmed for Prerelease 2

Greg Milson 2019-04-16T16:55:55Z

Is this still an issue in 1.13 pre-3?

Xander Kooks 2019-04-16T19:31:04Z

only one way to find out

Xander Kooks 2019-04-16T19:38:09Z

Fixed for 1.14-pre3. May pop up in future pre-releases though.

gaspoweredpick 2019-04-16T22:21:05Z

I doubt that. Also can confirm that sneaking now works properly in 1.14 Pre-Release 3