Here is Blocs 3.1 beta build 3. This build is pretty light on additions and addresses a few outstanding issues, however it does add a new Bloc bar UX.
So the Bloc bar now fills the canvas when you are adding the very first Bloc to an empty project, it just makes more sense as the rest of the canvas is empty. Anyway I didn’t stop there, I figure those on small laptop screens may want to be able to open the Bloc bar full screen by default, so I added that as an option too. You can set the Bloc bar to full screen in the main apps prefs or via the actual Bloc Bar row drop down menu.