On multiplayer servers ever since 1.9+ the client has allowed you to fall into blocks you have just placed.
An example can be seen from these gifs here
1.8 client - https://gyazo.com/51282f95131683d063d9eb96015cf770
As you can see from that gif there are no issues when looking at your feet, holding down jump and placing blocks underneath you.
1.9+ client - https://gyazo.com/148ceb46660a6064a31a297450e64f48
the client constantly falls into the blocks you just place, bumping you off of your tower making it incredibly hard to tower up.
Reproduced the issue using the official 1.9 Minecraft server, can only seem to reproduce it with a latency. When testing I had 250ms latency (Australia --> USA), when testing with no latency or localhost cant reproduce.
Prior to 1.9 this issue was never present (I believe the jumping height changed in 1.9, possibly to do with this?).
The client is receiving a teleport packet when it teleports the player and messes them up.
Sequence of packets - http://i.imgur.com/G8SS7Xc.png
The server doesn't change the block until after it teleports you out which is weird.
Comments 12
The only thing modded about this report is the gifs.
I have reproduced on completely vanilla client and server.
Reproduced in this gif here -https://gyazo.com/a00a2f7f422f73169f859dc7c51a86a5
minecraft_server.1.10.2.jar (Downloaded from the following link - https://s3.amazonaws.com/Minecraft.Download/versions/1.10.2/minecraft_server.1.10.2.jar)
Vanilla client,
as you can see it stutters placing the blocks as I am towering up, falling inside the blocks i just place.
Is this still an issue in the most recent versions (currently that is 1.13, or the latest snapshot 18w31a) of Minecraft? If so, please update the affected versions and help us keeping this ticket updated from time to time. If you are the owner/reporter of this ticket, you can modify the affected version(s) yourself.
Invalid, modded server.