When taking the ship from Old Ebonheart Docks to Almas Thirr, on Openmw at least, the player spawns inside the main canton mesh, rather than on the dock.
Material Matters, a quest given by the Andothren smith, Ulran Teryon: he greets you, a stranger, with a confession that he's sold a bad merchandise that's probably led the buyer to death. I suggest to at least gate this greeting to a certain level of disposition (70?).
A longer alternative would be to start the quest by introducing the quest topic in general city greetings (for ex. "Our local smith, Ulran Teryon, keeps asking about a certain western crusader. He seems concerned but doesn't tell why".)
Lanette, the bandit leader in Almas Thirr underworks hideout in Vodunius Nuccius's Part 2, has a unique named sword. But she fights with her bare fists.
Gnaeus Barossa mentions having a stash of money in his letter to Nodgar. It reads like the stash is somewhere in or around the temple, but I can't find any such thing. Would be cool if a snoopy player could find his stash with some coins in it.
According to the quest, the bedroom at the top of "Oran Plantation, Oran Manor: Main Tower" int cell belongs to Drolora Oran, the daughter of Atran Oran. However, currently, the room is filled with weapons and has Adamantium armor pieces, implying that Atran Oran is the real bedroom's inhabitant.
While tackling the atronach in the OE quest: "To Catch a Cold", a guard from the harbour joined me in the fight, but forgot to use his sword. I am not sure what causes this. It may be OpenMW related.
Journal entry says: "Ophelie Vilifiene gave me Constantius' reforged axe. Its powerful enchantment persisted all these years." However, the axe, "Unending", lacks an enchantment.
You can ask Amelphia Tarramon about various kinds of Morrowind liquor (sujamma, greef, etc) before beginning the relevant quest (Mages Guild: Four Types of Liquor).
Join all houses mod is not working in the mainland. Im in house hlaalu and telvanni, I tried to join house telvanni but the NPC said I can't join because I'm in house hlaalu despite me being a mouth in telvanni already.