A little late in the game, but I took the Seven Graces quest from the guy (can't remember his name) at the Mournhold Temple who gives you the Shrine Of The Dead quest. I completed the quest, activated all shrines, got journal entries for each shrine. But when I when I returned to him, he just tells me to talk to him again when I have visited all of the shrines and I know I've been to all of them. I double-checked my journal to make sure I had an entry for each shrine. I'm pretty sure I clicked on every topic related to the quest. Is this a bug?

Have you tried checking in with one of the standard quest givers on the island rather than the mainland? It's possible the NPC faction members for the Tribunal in Mournhold aren't set up correctly (in dialogue) to properly progress you to the next stage in the faction questline. Go back to the main quest NPCs in Balmora or Ald'ruhn and see if the quest completes normally.

You have to go back to the Temple in Balmora, and speak to the priestess in charge there. She's upstairs in the domed room.

Did you read the book you get? I dimly recall a possible problem with quest order if you don't read the book.

I followed the quest "by the book" in that order. I'll try one of the quest givers in Vvardenfell the next time I play. Thanks guys!