[MC-129409] Water acts like air block on multiplayer

water acts exactly like air on a LAN server as a guest; players still lose oxygen and take damage when it runs out, but have to get above the surface via blocks.

pictures are of me falling, taken about 2 seconds apart.

Linked issues

is duplicated by 6

MC-129303 Game completely ignore water on server Resolved

MC-129410 Water acts like air block Resolved

MC-129561 Water Bug Resolved

MC-129563 Water not detected Resolved

MC-129690 Player can breath inside non-source water block Resolved

1 more links

relates to 3

MC-129358 Flowing water acts like air Resolved

MC-129236 Swimming Sometimes Doesn't Work Resolved

MC-129347 Fish swimming sideways on multiplayer Resolved

Attachments

Comments 25

Jared Davis 2018-05-09T22:19:47Z

MC-129410 - Experienced the same. I also tested with boats. They float when placed but sink once you enter. they remain on the bottom until broken and then the drop will float.

Joseph Landis 2018-05-09T22:25:29Z

Did this only happen when on a LAN server?

Jared Davis 2018-05-09T22:36:02Z

I run a whitelist server, yes

Edit: and it happens from the host machine or from a remote client

ednoria 2018-05-10T00:13:53Z

Same here, very strange. There's no way to start swimming, as far as I can tell.

ednoria 2018-05-10T01:08:54Z

Same seed as a single player is fine, but on a multiplayer server swimming doesn't work at all.

15 more comments

Jeremy Walters 2018-05-10T01:10:55Z

verified; unable to swim if underwater. player sinks to bottom as if it was an air block. also will take fall damage if landing in water. sound effects and breathing act as if under water. boats sink like a rock once you board them. LAN/Server 18W19A

Signal Five 2018-05-11T01:59:37Z

Another potentially related symptom of this issue is found when fishing. The bobber (float) does not remain on the surface, but immediately sinks to the floor of the body of water you are fishing in. The remaining fishing mechanics remain intact..i.e. the surface of the water still shows the approaching fish and you hear the subsequent 'strike' by the fish and right clicking to catch the target also still works.

Cam P 2018-05-11T18:58:00Z

Found a temporary workaround for guests. If they first enter a single player world and swim, then leave and enter the LAN multiplayer world they are able to swim like normal.

Joseph Landis 2018-05-11T20:07:53Z

Thanks Cam P!

Greg Milson 2018-05-12T02:52:18Z

They better fix this bug because it is game breaking for servers.

or man 2018-05-12T12:30:05Z

also the fish animation is like they are not in water

[media]

qwerty23495 2018-05-12T18:07:27Z

Lava also is blue and looks like water. Potentially related to this since it is multiplayer only and deactivated in the same way as this glitch.

Agnes Larsson 2018-05-16T12:36:11Z

If you 'fix' it by starting a single player world and then go back to multiplayer, is it fixed forever then or do you get the issue again after awhile?

CreeperMagnet_ 2018-05-16T12:47:45Z

It comes back again, Agnes. At least that was the way it was in 19b. You need to do it every time you launch your game.

ednoria 2018-05-16T13:09:13Z

What CreeperMagnet said. As long as you are still in that same session, you're fine – but you have to go into single player first every time you launch your game.

Agnes Larsson 2018-05-16T13:09:27Z

Ok, thanks!

I have issues reproducing this in 20a. But you all can reproduce the issue in 20a in the same way as in 19b?

ednoria 2018-05-16T13:10:54Z

Definitely still a problem in 20a, I tried it last night.

ednoria 2018-05-16T13:21:08Z

Ok I just tried it now, and it worked! The difference between last night and this morning is that last night, when I had to go into single player mode first, I was not the only person on the server. Today, I am. Hopefully that is some help!

Agnes Larsson 2018-05-16T14:26:26Z

Ok thank you Diane!

If anyone get this issue again, please let me know how you managed to reproduce it. Thanks!

Jared Davis 2018-05-20T15:05:48Z

18w20c I can swim, place and use boats. seems fixed (but new bugs have appeared in the water)

Jbip 2018-05-21T13:43:55Z

This bug doesn't seem to be affected by LAN or a server for me. Converting an 1.12 world to 18w20c also seems to work fine. This bug did affect worlds from older snapshots for me though!

Thomas Hall 2018-05-24T04:47:42Z

Affects 18w21a on a world last opened in snapshots.

EDIT: Swimming in singleplayer first does not fix the problem as the reporter above claims.

Joseph Landis 2018-05-25T11:59:56Z

Thomas, it worked in earlier snapshots, so thanks for telling me that it does not work now

Cade Whitley 2018-05-31T14:48:43Z

Is present in 18w22b

Nathan Smith 2023-12-27T02:16:56Z

Can confirm in 1.20.4 - Any fixes? it seems that when it breaks, it breaks across different instances of minecraft.