Found in Version:
I just joined Telvanni at the council house in Port Telvannis. I have not touched any Telvanni quests on the mainland. I talk to the various Mouths to receive their quests, and then click on "join House Telvanni" which is available despite me already joining. The NPC (doesn't matter which of them, the behaviour is the same) says I am already in, but I get stuck in dialogue with two options "Yes I'll pay" and "nevermind". Neither option gets me anywhere, and dialogue is stuck.
Report time: 2020.03.24 23:01:37 UTC
Content file: TR_Mainland.esm
Memory address: 0000020534D527B0
Cell: Port Telvannis, Telvanni Council House: Chambers
Coordinates: -1113.98 6448.97 13805.5