Often the portal get stuck at analyzing world data after i have returned to sanctum and try to use the right portal to warp home.
My home is at my sovereign world.
I have to use the left portal to go back from where i came, and return to sanctum again, then it works.
No need to do that, you could also walk back to the starting point of the sanctum (the area where you start) it will reset the portals , its a little trick not many know about