Sort of...if i can hit you with sneak attack for 80-90k and you only have 50k hp, I can just hop right back in hide. Sneak attack, hide, sneak attack, hide. Technically it triggers global cool down, so there is a .75-1 second wait. Vanish also exists, has a 10 minute cool down but lets me run mid combat. Invisibility pots work in siege war, 2 minute cool down and scouts can't see you even with detection. Candy. Cake. Substitute (r/s elite skill, absorb one hit). Evasion (40% dodge I have 25k dex with a hero. You are not going to hit me with evasion). blade cape (same as evasion but shorter buff) Escape (break stun/root and put you in hide for 8 seconds). lvl 50 honor point pvp glove skill (break root/stun). Spell weaver + sprint + mad rush = run faster than a mounted player. Shadow step will port a rogue behind you. Rogues do infact get aoes: Wraith attack, and phantom stab, and some other rogue combos may get others. That covers what could be confused as an immune hack, port/run speed hacks, and invisibility hacks.
And that is just rogue. holy arura, that...knight shield that protects you (sorry knights, I know jack squat about your skills). Rock protection, mother earths protection, calm heart (immune from fear), aoth rings (immune from fear). R/k gets a group immune from fear. Aoth Defense cape (20% damage reduction). Im going to forget a lot because i dont play those classes.
lots of hybrid classes get skills that do damage for both magical and physical AT ONCE, so candy/cake wont save you. (M/S fire arrow is a good example)
Classes other than rogues also get temporary hide skills (such as S/Wn hide scent).
If you suddenly cant attack, you could be rooted, silenced, or stunned which every class has.
If you are getting shot through a wall, disarmament arrow and thunderstorm still ignore Line of sight, along with warden pets who just walk right in.
Any other questions?