The unusable corpses in Bannon's and Lookout's boss encounter interfere with corpse skills

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SirGuySW wrote:

Bug Description:
The Bannon and Lookout map boss' encounter starts with several 'sub-boss' mobs. When these mobs die they create corpses that cannot be removed or used by corpse skills. These corpses interfere with corpse skills, often making corpse skills cast near them do nothing.

This is very repeatable (occurs about 9/10 times I run Lookout or rescue Bannon).


Theory:
My guess is that the unusable corpses are 'using up' the corpse skills' corpse target limit. For example Volatile Dead looks for 3 nearby corpses to explode. It finds 3 corpses but they're unusable and can't be exploded so it ends up doing nothing (and doesn't even use mana or cast animation if there are no nearby *usable* corpses).

This can be demonstrated (video) by creating usable corpses next to the unusable corpses and noting the difference in the successful cast distance on both sides of the unusable corpses. In my testing the corpse skill had to be cast nearly on top of the usable corpses when on the unusable corpse side but could be cast pretty far away on the other side. Illustration:

Spoiler

Videos:
Lookout: https://youtu.be/xw_7bzTF-wg (bug is fairly clear towards the end).
Lookout2 (5 sec vid during boss fight): https://youtu.be/oJFqW6i2SMA
Bannon: https://youtu.be/26hrXnL2MFk
Bannon2: The Cathedral Rooftop (from instance creation)



Bug report #s:
Lookout: 3,186,128,683
Bannon: 3,251,221,123


Obligatory image:

Spoiler

Related reports:
Unusable corpses
Can't target corpses when saving Bannon
Bug with desecrate being unable to create corpses. (Looks like the same bug but not with the special corpses in Lookout's boss area)