I wanted to flag an issue I ran into. Premiere was crashing when I would go to render. It was a repeatable crash point. It would happen when I hit Export, hit send to Media Encoder or tried to move back to the Edit tab. It could also happen when going from the Edit Tab back to the Import tab.
Eventually, I figured out that this crash behaviour didn't happen if I limited my Premiere window to a single screen. Hopefully, this can be fixed in future updates. We should not have to adjust our window's dimensions in order to output a file.
On a somewhat releaded topic, making the panels of the new Import and Export pages adjustable and dockable, like every other Adobe application, would be great. In their current UI, there has not been any consideration for editors with more than 1 monitor.