This glitch still exists, even in the most recent version, as of what I know. I'm not a Mojang developer, but I can tell it's a hitbox glitch. The mobs can't be hit until the block they're in is broken.
No, there's no absolute way it can be server lag. I'm sure that this glitch has been around since before the LAN button was introduced, even on singleplayer!
This glitch still exists, even in the most recent version, as of what I know. I'm not a Mojang developer, but I can tell it's a hitbox glitch. The mobs can't be hit until the block they're in is broken.
This still happens with Blazes in 1.7.2.
Confirmed to be in 13w48b. Happens when the top is set on fire, it appears to be a corner wall for a few seconds.
No, there's no absolute way it can be server lag. I'm sure that this glitch has been around since before the LAN button was introduced, even on singleplayer!
You are either using a mod, using creative or lying.
In 1.4.5, Infant Zombies weren't official. Only mods could spawn them. These days, they are natural and have sounds.
Did you alert them of your presence before you became invisible?
Confirmed in 1.7.4.
I think this happens because minecarts are entities, like mobs.
You could be either hearing things or using sound packs.