Updated Quicken Deluxe to R51.10 / Build 27.1.51.10. On restart, the application window isn't rendering the pages correctly inside the window - everything is 20% narrower than the window width. Home, Bills, Investing, registers, etc.
I've attached a screenshot of the upper right portion as I didn't want to include my bill reminders, net worth graph, etc. But that is enough to show the Home/BillsDue page and where the full application window border is (by comparing with the title bar) and the layout of the page contents and the fact that it isn't as wide as it should be.
Admittedly, subscription has expired; not sure if that is causing the content to align with the right-hand-side of the reminder message…