items being deselected in build mode [XB1]

hi,

i’m currently having an issue where, in build mode, after i select an item, the game will deselect it before I can place it, or sometimes even before i can move my cursor. 

it has only started today and means i cannot build. i am on console, have tried opening and closing build mode itself, saving the game and coming back to it from the main menu, etc., nothing has helped so far.