Ffaen
- ffaen123
- ffaen123
- Europe/London
- Yes
- No
Deleted Comment:
Also, see this tweet from Searge: https://twitter.com/SeargeDP/status/479602136972795904
We are not going to do any performance optimizations until 1.8 is feature complete and we start the buffixing and polishing stage.

Confirmed in 1.7.4. Still annoyed this hasn't been fixed >.<
Confirmed for 14w07a
Seems to have broken, but the other way. On 14w25b I cannot get the name of an item to display at all. I'd only assume its the same for the rest of the technical items too.
Command: summon Item ~ ~2 ~ {Age:-32768,PickupDelay:32767,CustomName:"Defenders Captain",CustomNameVisible:1,Item:
{id:minecraft:diamond,Count:1},Riding:{id:WitherSkull,Invulnerable:1,CustomName:DefCap,CustomNameVisible:0,direction:[]}}
Also, see this tweet from Searge:
( https://twitter.com/SeargeDP/status/479602136972795904 )
https://bugs.mojang.com/browse/MC-57822
also confirmed.
Try it on a 20hz clock. Its still apparent in 1.8, as of recent testing.
During testing, I was using a 20hz clock (the setblock / fill ones) with the command:
/effect @p 4 60 3
The issue may be that the client is refreshing the mining fatigue, so that you cannot mine anything as it keeps resetting your break.