The best pupper D.O.G.G.O. summoned by the engineering device Irresistible Red Button normally resurrects the raid in every instance of a wipe. However, on Ansurek if the raid has triggered the first bridges in Phase 2 (meaning they are on or headed to the platform with the shielded add), and then the raid wipes before triggering Phase 3, the resurrection will fail. This is because D.O.G.G.O. is teleported to the new corpse location during raid encounters when that location is updated (i.e. dead players are teleported to the second platform once someone arrives and the bridges expire), and the second & third platforms of Ansurek P2 are outside visual range of where the raid’s bodies are moved after combat drops.
This could be a view distance issue with the entity, or it could just be a special case where D.O.G.G.O. should teleport back to the raid wipe corpse location prior to casting the resurrection after combat drops (which is a solution that would benefit all encounters, not just Ansurek). The max range on the resurrection is supposed to be 200 yards, so I would think it being on those platforms would still reach us, but it does not.
For comparison, if a wipe happens in P2 on the first platform or in P3, D.O.G.G.O. is on those respective platforms and the raid gets resurrected up to them and requires jumping down to get back (with slowfall, if on the P2 first platform).