Pressing spacebar in an app scrolls the page (or does nothing). I know this behaviour comes from the fact that apps is built using web technogly and run in Chromium that's embed into Spotify desktop, but almost everywhere else in Spotify spacebar is play/pause.
Also: Make cmd+L (OS X) focus the search input in apps/radio (as it is in the rest of the app) (I know that option+cmd+F works for this in apps/radio)
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