Steam Deck controls should now work out of the box, both for the built in controls and any external controllers. No need to remap keyboard controls. As a result of this fix Windows and Linux versions of the game also now support swapping between multiple plugged in controllers on the fly.
Update V2.02 - Fix for Steam Deck controls.
Build and release context
Steam update times within 24 hours of this post. Matching dates do not confirm which build it describes.
Build 12537447 · public branch
Steam updated · First observed