Classic

等一下网址一直很卡

This still appears to be an issue in 22w46a, despite being marked as fixed. Note the rails in the Tools & Utilities tab - a change made in 22w46a

Have you tried to replicate this without Optifine? This may be an Optifine issue which you should report to the author.

This is simply because some of the Mojang servers are timing out or running slow. The best thing to do in this case is to wait for them to come back online - your skin will work correctly and you'll be able to enter servers without getting kicked.

It's only been happening for the last hour or so, too.

1. Get skeleton to shoot pigman.
2. Bucket of lava at skeleton's feet
3. Move away and log out
4. Everyone on your server gets eaten by pigmen

This has been the cause of MUCH grief on my server and needs to be fixed. Unfortunately, I doubt it ever will since Jeb_ deliberately put this functionality in the game.

This also happens to me in 17.10. Both the server and client are hosted on a Windows 7 PC; 8gb ram, 3.0Ghz dual-core AMD Athlon II X2; Java 7 update 67.

I believe it results from the server not realizing you've switched to a shovel, and the blocks are broken (thanks to a combination of diamond quality, efficiency, and beacon) before the server registers they should break that fast.