Finally someone else with the exact same problem that I have! It's so frustrating!! There is a workaround (which is probably why the fix isn't being prioritized). 1.) Connect 1 controller to your steam link. 2.) Connect another controller wirelessly to your PC. 3.) Launch destiny with the steam link controller. 4.) Play with the controller connected to your PC. Does the game also launch, and then immediately get minimized for you, too? It's super frustrating to go back and forth between the bedroom and living room every time I want to play the game in the living room. I launch it via steam link, it gets minimized, then I have to go pull it up on the PC, and go back to the living room. Super annoying.

It seems the same as before with Battlenet. Its not 'hooking' onto the steam overlay properly in steam link. I've made a post too and they told me to contact steam (lol). If you start steam link, then open Destiny 2 on your PC, it works sometimes (sometimes!). You will have to manually map your controller via steam though as it wont recognize the controller (basically emulating mouse and KB via controller). This means no aim assist and the movement/menu is very clunky. I was looking forward to the steam launch because of this but it isnt working Bungie! :(