I have completed Echoes of the Ring War 3 times now and as soon as last NPC falls it says loot the chest, but so far no chest is appearing at all. i have scoured the whole ring war area with nothing found.
Still happening no summon does not work. I get Loot chest message and at the same time wait for ring war to begin message in journal looping it seems will switch between loot and wait in journal. I have looked around the full ring war area and still no visible Giant chest( yes know what it looks like) appearing to click on to loot. I managed one time only to get it to show after the last NPC dropped right near me, but next attempt on different character nets no chest at all.
Have same problem as of today, Can not complete quest as there is no chest. Interesting thou is that Time remaining still flashes in red and counts down and the text alters between "-Wait for the attack to start!" and "- Loot the treasure chest" . Well no chest visible or targetable as far as I can see.