If in a shop, in the shop menu, use the escape-button to go to the system-menu. In the system-menu click on “go to sanctum”, then you been taken back to the shop-menu, where one more use of the escape button take you back to the game.
But 30 sec later you are transported to sanctum.
So after i clicked the go back to sanctum button it counts down without showing it, and the game continue until taken back to sanctum
Hope this sound logic…