[Jify]

UPDATED: NOVEMBER 24, 2009
UPDATED: July 7, 2010

These are all over the place. Figured I'd condense them. Cheers!
(Note: Corrected bugs will be in Green & Italic.)

Pets:

• Water does not regen faster than other pets.

• ]Air does not seem to have increased avoidance (should be similar to monk).
  
• Water is not extremely resistant to Poison.
• Fire is not extremely resistant to fire.
• Earth is not extremely resistant to disease.
• Air is not extremely resistant to cold.
  
• Pets lvl 24+ should dual wield when given weapons, at lvl 39 they should dual wield without weapons.
• Pets do not dual wield until lvl 49. (they only double attack with primary weapon)
• Air stun, fire DD, and water DD seem to be a proc, not a casted spell.
• Pet spells from 39 onwards should have 30 hp/tick regen. Currently they only have 6(Added: November 9th, 2009)
• Level 44 Fire Pet hits for less damage than other level 44 pets.

Spells:

• Magicians did not have pet heals until 2/17/2000.
• All Phantom Armor lines (except Phantom Leather) do not increase regen. (Note: They should not regen pre-Kunark. PENDING: November 16, 2009
• Some Damage shields (Shield of Flame, level 20) don't seem to work.
• Summoned: Sword of Runes does not proc on every type of mob when being wielded by a pet. It should. (Should only proc on summoned mobs when wielded by a PC)
• Lvl 4 Spell Burn should be 14 mana to cast, not 7. (Added: November 17, 2009)

Abilities:

• Research skill should be limited to (level -15)*5

That's all I can remember at the moment. Will add to this thread as they show up.