Are they Proximity Explosives? The name suggests that it's just being close to them that sets them off.
They were target-able destructive objects like the ones in the Hollows or near destroyer spawns in Nova Pretoria.
Specifically the ones in the first two missions of Luke Larson's arc in Imperial City.
Has anyone else noticed that conductive aura sets off nearby explosives with just a single tic? The first time it happened a mob had just dropped a burn patch near it so I thought that set it off. However just walking by set off a second group.
Any idea if this by design or a bug?