I found a bug in my attempt to complete “The Last Imperial” Quest. I searched a bit in the forum and did not see it posted.
When I talked to the Last Imperial and went onto destroying the Phylacteries, the one that is at the far southwest (most left bottom “corner” of the map) was not there at all.
I tried to exit the zone and come back but it was not there even then. After that I exited the game, went back and the Phylactery was there.
Concluding, I think this a Low criticality/priority bug, but it is good to be known and fixed.