Playing as Clan Skyre with mods that allow one to play as any faction (even minor factions) + custom legendary lords added to the pool... I reached what most wouldn't in a normal game. When you take a 13th lord as a refugee, until it and all 13+ lords are out of the pool (are active lords), you cannot see lords 1-12. This oddly is true for even if you recruit any of the 1-12 lords and have them as active lords before the 13th is added to the pool... but takes the form of it's own "page" (other "pages" of 12 are not visable as far as I can tell).

If I had the knowledge and time, if there was a way to kill/release legendary lords after recruitment and redenotate/bump-up who is lord 1-12 (eg. release lord 12, lord 13 becomes 12), I'd hope it fix this bug but I suspect its a game bug... I can't think of one time in an unmodded Total War, and I've been playing since the original Romes, that I had any notable amount of non-recruited former lords sitting in my pool. If it's that the default game interface/function cannot support scrolling through more than 12 former (inactive) lords, then it is what it is... already looked for a mod to address it and could not find one, this is just a hail mary FYSA in case there's an aha moment in which one thinks of a quick and easy fix.

The above information was triaged via a lot of backloading and turn ending sequences... it seems that every other time a skaven faction dies... and in my campaign Skaven have a massively expanded unit roster.

Thank you for the mod, I love it, despite what I suspect to be a quirk of the game itself.