I'm on a server, I didn't check if this also happened in single player, but well. The thing is that, in the server I tp myself really high in the y cordinate and drop. Basically, I skydive. But since 1.8 I had this weird bug, Where I'd dissapear when I passed More or less 547 Y Cordinate. You Couldn't see other players either, So yeah... It kinda ruined it because I was with a bunch of friends and they where invisible, so I say DROP! and someone doesn't drop, I can't wait him.
I just noticed that while in F5 and F3 the new cross in the middle that tells u I guess... Uh the sides of a block? I dunno but that goes really small for some reason.
Here's a Pic
If the pic doesn't work for some reason here's the url: http://imgur.com/ZBQ1f11
Btw I was F5 There So You can clearly see I was invisible. xD clearly see I'm not visible. That sounds funny...