The Steam Deck beta channel has had another update, but also rolls in some non Steam Deck Specific items, around Big Picture mode.
You can find the most relevant items below:
Bug Fixes
Fixed non-Steam apps becoming unresponsive to gamepad when onscreen keyboard is opened
Fixed background images on a collection on the app details page not being clipped correctly
Fixed issue where the Remove Collection dialog was not appearing
Steam Input
Handle errors better and fix some cases where configs would no longer load
Fixed some cases where some languages could have text overflow in choose binding screen
Remember the last active tab in the choose binding screen and open to that instead always using the tab w/ the current binding value
You can check out the full change log here.