With the recent "fix" to Vis'kag, I heard that Bonereaver's Edge is also using incorrect stats. I did some digging, and indeed, we are using the post-1.7 version of the sword.
Proof:
This is from the world first Ragnaros kill on April 25th, 2005. Patch 1.4 was released in May, so this item is from patch 1.3.2 (released March 22nd, 2005).
For those too lazy to squint and read the low-res text, it reads:
206 - 310 Damage
Speed 3.40
(75.9 damage per second)
Requires Level 60
Chance on hit: Reduces target's armour by 300 for 1 min.
Equip: Increases your chance to get a critical strike by 1%.
This means BRE should be applying a non-stacking debuff against the target, and it should not have Stamina (I believe it gains the Stam in the 1.4 item level update).
Additionally, these are other patch notes regarding its proc:
Patch 3.0.2 (14-Oct-2008): The proc effect is now a buff on the wielder rather than a debuff on the target.
Patch 1.7.0 (13-Sep-2005): The duration of the Bonereaver's Edge weapon debuff has been lowered, but the frequency of the effect has been raised.
Here are some Allakhazam links:
August 21, 2005
April 15, 2006 (One poster from around this time said BRE was a self-buff. Interesting.)
December 6, 2006
Patch days:
1.5 (AV, WSG) - 7 June 2005
1.6 (BWL) - 12 July 2005
1.7 (ZG, AB) - 13 September 2005
[...]
1.10 (Weather, T0.5) - 28 March 2006
1.11 (Naxx) - 20 June 2006
With Vis'kag being changed without any word, it's only fair Bonereaver's Edge gets changed, too, right?