MaNGOS Version: 9691
Custom Patches: Vehicles + many more (also tried on clean mangos)
SD2 Version: Custom Branch
DB: YTDB rev. 542
How it SHOULD work: Applies bonus armor from all currently equipped items EXCLUDING trinkets, weapons, neck and rings
How it DOES work: Applies bonus from all currently equipped items, INCLUDING trinkets, weapons, neck and rings
Some clarification:
After patch 3.0.8 druids in bear and dire bear forms should not receive any multiplied (180/370%) bonus armor from weapons, trinkets, rings and neck, but they still do receive.
How to reproduce:
Equip a level 80 druid with a ring that gives armor (Violet Signet of the Great Protector for example) and see the armor values in the characters tab. Now switch to bear/dire bear form and see the values again.
Checked on offi before posting.