Hi monsieurblack, thanks for writing this post.
I had the same problem - I run a plex server on a mac, and have an apple tv.
Whenever the server updates, the “live tv/tidal” and other menus returns on the left sidebar and I have to unpin them each time.
My account remains logged in after the updates, and as far as I can see nothing else changes, apart from the added menus on the sidebar.
I have tried turning off the settings that BigWheel reccomended, and will let you know if something changes.
In any case, the steps needed to take in order to turn this off are really not obvious and should be made clearer to the user.
Thanks!