RG Live WotLK 3.3.5a

BoP mechanic don't protect the target from taking spelldamage. Source: http://wowwiki.wikia.com/wiki/Hand_of_Protection
HdS schützt das Ziel nicht vor Zauberschaden. Quelle: http://wowwiki.wikia.com/wiki/Hand_of_Protection

Since this are in fact the "white hits" of those creatures this should be investigated further before closing the ticket.

Es wäre vielleicht hilfreich zu erwähnen was der eigentliche Bug ist.
Momentan verliert man mit Hand des Schutzes nicht die Aggro von den Feuerschaden machenden Adds im Halion Encounter. Das ist aus der Ticketbeschreibung leider nicht ersichtlich...

Aus Veylens log geht hervor, dass dieses Verhalten wohl falsch ist, allerdings sagt es noch nichts darüber aus, ob der Schaden durchgehen sollte wenn man gehauen wird, das stände als benötigte Info noch aus.

Veylen schrieb:

There seems to be an immediate loss of aggro, which whould only occur if the Living Embers can't hit Owld anymore.

I think this assumption is wrong. Even Creatures that don't to any melee damage (pure caster NPCs, like Keleseth and many others) will drop their aggro if you HoP someone. Aggro will only be restored once the HoP aura fades.
According to http://wowwiki.wikia.com/wiki/Hand_of_Protection?oldid=2232036, this seems to be the correct behavior:

Players protected lose aggro while under its duration.

So at least auto attacks with elemental damage should be blocked by Hand of Protection.

We need a source for this. Things like Envenom, which is a melee attack that does nature damage, penetrate HoP. Why shouldn't this apply to regular melee hits that do fire damage?

Side note: I'm not sure how you got the adds to attack a HoP'ed player in the first place. I guess taunts would work?

1337 schrieb:

I think this assumption is wrong. Even Creatures that don't to any melee damage (pure caster NPCs, like Keleseth and many others) will drop their aggro if you HoP someone.

This is indeed more likely the case in this log.
But this behavior is reported buggy as well in this ticket and most likely the real bug.

So a bop does provoke a loss of aggro. Therefor the question if bop prevents a melee attack with a non-physical damage type is not relevant, because a mob would never attack in the first place, would they?

Conclusion: NPCs do not react properly to situations in which they can't hit the target with a standard melee attack.
If an NPC can't attack his target with a physical melee attack - and it doesn't matter if they actually do such attacks - they should switch to a target they could attack. This should apply to immunized targets (this ticket), as well as unreachable targets.

Adds on Halion (as reported and verified in this ticket), Shadowfiend (as reported in this ticket), any rooted NPC with a target not in melee range (as reported in #21838).
First two examples are the only NPCs doing non physical auto attacks (known to me). So this is a rare case. NPCs with physical auto attacks react properly to a HoP.

Maybe I should've said "NPCs do not react entirely properly"...

To DEVs:
Quick fix: Make HoP drop Aggro in any case except if a taunt is used.
Full fix: If an NPCs is hindered by anything in reaching (aka moving to) and hitting his current target with a physical auto attack (regardless of capable of one) he should switch his target to the highest target on his threat table he can reach and attack.
Pseudo logic: if not (can hit && is reachable) then switch tagret