I actually found a work-around. 100 % works but you gotta be fast.
After you click on “See decks” you have 0.5 sec in the transition the click “Play” and the queue pops up in the background, and it WORKS.
So after clicking “See Decks” drag your mouse to “Play” asap and click it. When you get in, you can play normally.
After the match you do the same repeating process.
If you weren’t fast enough… Don’t worry, you can re-try without restarting the game. You can simply click on the bottom right button (in the background) to take you back to the menu. This is from the window where you can choose a deck. The ‘My collection’ and ‘Back’ button still work and are clickable.
Not a FULL fix, but at least it works. Good luck people.
EDIT: Don’t know if it’s possible to change the deck from your collection, but maybe when you only set/create 1 deck you can use it and queue up with it. Don’t know about this, can’t confirm the possibilities.