I am going to post all the bugged quests that I ran into and any reliable work around that I found. There are two goals: inform other players of the bug so they are prepared and dont waste too much time on these and provide the devs a comprehensive list. Feel free to contribute. Also remember to submit a bug report for each quest in game.
Faction: Daggerfall Covenant
1. Mission: Bloodthorn Assassin
Description: The suspicious crates won't spawn.
Work around: No reliable work around. People reported relogging working for them. Didn't work for me. Tried relogging over 20 times.
2. Mission: The Ghost of Westtry
Description: During the phase where you are supposed to watch the conversation between Rosalind and Leon, Leon never spawned.
Work around: No reliable work around found. Relogging didn't work. Tried 10 times.
3. Mission: Mastering the Talisman
Description: In the phase where you are supposed to put the talisman in the revealing pool to force the daedra out of the talisman, I can not interact with the pool.
Work around: None. Tried the usual: relogging, restarting quest, /reloadui. Nothing worked.
4. Mission: Spindleclutch
Description: The NPC Praxxun (or whatever the name is) refused to follow us inside the cave.
Work around: Hard to try anything with a group of 4. So I just abandoned group and joined a new one.
5. Mission: Crosswych Reclaimed
Description: Steneris Gelvis wont spawn.
Work around: 1 relog didnt work. Didn't try anything else. Lost patience (3 quests in log all three bugged)
Keep the list coming