Stealth feels dreadful since pre-patch

I've played a fair bit of rogue among other classes and there's something I've noticed on both stealth and non-stealthed classes: stealth is suddenly shit. Firstly, when I vanish I get brought out 50% of the time by targeted spells. My friend and I then noticed that when a class stealths, they are still visible for half a second to a second. On my pala I am often able to HoJ a stealthed class I shouldn't be able to. Then, the 12 year old vanish bug of having pets undeterred by you slipping in to the shadows. This is happening 10x as much to me as before pre-patch. Earth, wind and fire chased me while I was stealthed after vanishing for a good 5 seconds before catching up and thumping me out of it. The same has happened multiple times with hunter pets and warlock pets. Has anyone else noticed any of this or am I going mad?