this problem is still in 1.6.2
In my newest picture (with 3 command blocks) you can test very easily.
I tested it, Any damage at the last second or after will provide you this thing.
just use the effect command to give you health boost level 6 or above (small duration, like 30s ). then fill it up (I used regeneration level 6 for a short time ) then at the last seconds of the duration jump in lava or set yourself in fire (those two work for sure, bu i'm not sure if something else will work) you must have 20+ harts at the end when the effect stops.I hope that helped you. 🙂
Was this posed to get fixed in 13w05a snapshot.
Because it's not fixed in that version.
Re What do you mean...
Think that you have 5 or longer block long water stream and the final flowing water block is above an empty block (water automatically flows down to it ).
Then you drop an anvil to it.
An example X=anvil placement 0=solid block Y=water source block D=flowing water block A=air block.
top layer:
AAAAA
AAA0X (block to put anvil next to )
AAAAA
2nd layer:
AAAAA
YDDDD
AAAAA
3rd layer:
00000
0000D (the anvil falls to the water block)
00000
So this I mean.
yeah, it's still in the game