If you pick the lock, found the dead body in The Salty Futtocks, and then try to rent the room (without saying a word about the body), Jodald will have the same response as if you already discussed the dead man with him before, saying Fingers crossed you won't find a dead guy in there this time, eh?
If following the Dark Brotherhood attack, speaking to a guard on the mainland, they will redirect the player to Senillos Tulnus in Firewatch, who in turn will redirect the player to Garros Mellorus. However, these still trigger the Vanilla journal entries, asking the player to go to Appelles Matius and Asciene Rane, which is both misleading and confusing. I suggest adding new entries to the journal for the Tamriel Rebuilt-specific path of this quest.