Click and drag on the slider toward the left of your screen, I can replicate this in edge, chrome, and safari.
Here’s a screen shot half way through the move off screen action: https://gyazo.com/70dd8a7c1db57e48b0a603f5ba156778
Here’s the after screen shot: https://gyazo.com/865643505554df98581fee9ce19a69f0
