Xcode 10, where are the UI elements?

Have been out of Swift coding for almost a year, I'm back.

Download Xcode 10 beta. Have I lost my mind? I've tried every trick I know, none of the UI elements show up in storyboard. Zero. The sidebar is empty.

Xcode 10:

Xcode 9, no problem there they are, all my UI buttons, etc.

thanks, this is kind of surreal. :-)

Library content has moved from the bottom of the Inspector area to an overlay window, which can be moved and resized like Spotlight search. It dismisses once items are dragged, but holding the Option key before dragging will keep the library open for an additional drag.

The library can be opened via:

• a new toolbar button (image attached);

• the View > Libraries menu;

• or the ⇧⌘L keyboard shortcut.