[2.5.1.1] Factions are still formable and joinable by a content council

[Hydra01]

As you can see in the picture you may still join factions of a content council, despite the text saying it should be impossible. Additionally the faction was founded by a council member on the council while it was content, which should also be impossible.
EDIT
After a bit of searching I found posts indicating that factions are still able to be joined when the council is not allowed to vote on wars. While this may be the case I can find no indication of this on any tooltip in the game and the tooltips seem to suggest the contrary.

 

[Servancour]

Council members starting or joining factions are indeed decided whatever they are allowed to vote on War Declarations or not. This specific tooltip isn't updating accordingly though, so I'll file a bug report of it.

Cheers for reporting!