People randomly appear and disappear since patch

[Erock KVen]

I've noticed at random people will pop up in front of me for about a second, and then disappear. You can target them but you can't actually hit them with spells, and then poof they're gone.

I think what's happening is I'm somehow seeing them while they're loading and as soon as they actually load in at the zone line that's when they're disappearing from my screen.

Anyone else noticing anything odd like this?