Blizzard has published a list of changes that may appear to be a bug to players but is indeed meant to be in the game.
With TBC pre-patch upon us, players will start playing around with their updated characters and may notice things working a bit differently than classic or even how they remember it back in 2007.
Here are all the current "not a bug" confirmed for all classes:
- Wyvern Sting shares a diminishing return category with Freezing Trap.
- It is possible to run quickly across a hunter trap and not trigger it.
- Energy regeneration “tick” timers are reset when shifting into cat form.
- Paladin Seals will not proc from Crusader Strike damage as well as several other paladin procs and abilities (including Vindication).
- Not all Paladin Seals can be “twisted” into each other.
- Reckoning will not proc from damage-over-time effects.
- Cloak of Shadows cannot increase the resist chance higher than 80% against other players’ spells. The full 90% chance to resist does apply against non-player creatures.
WoW TBC "Not a Bug" List Confirmed by Blizzard
- Bloodthirst damage does not scale from attack power gained via Improved Berserker Stance or Unleashed Rage.
- Initiating a charge or intercept against a focus target will cause your Auto Attack to begin against the focus target rather than your primary target.
- The One-handed Weapon Specialization talent does not affect the damage of Thunder Clap.
- Unused “charges” of Overpower will be lost on your primary target if an ability such as Whirlwind or Cleave is dodged by a secondary target.
- Arcane concentration will not proc from Blizzard damage.
- Coefficient damage from totems and item procs does not scale with +damage to specific creature types.
- Chain Lightning can cause multiple procs of Lightning Overload.
- When totems such as Windfury and Flametongue affect party members in combat, the Shaman who cast the totem is also placed in combat.
- Prayer of Mending will proc from damage that is reflected back at the priest.
- Damage over time effects on a priest with the Reflective Shield talent do not cause spell pushback.
If players are looking for more information on things they think might not be a bug but a change in the game check out Blizzard's post here.
And if you want to see a full list of bugs confirmed by Blizzard they can be found in a forum post.