When running NM dungeons, twice today I’ve found that because of the layout of the map, the end-of-dungeon chest has not been able to spawn.
The first time, there was a cliff just under the glyph juice pylon, and the chest simply didn’t show up.
And earlier this evening I had a similar issue, but this time because of a pillar in the way of where the chest should be. (Can’t recall the name of the dungeons impacted, sorry)