Browser Won't Leave Full Screen Mode

Browser Version: 1.66.110
Windows 11
Platform: Tablet - MUNBTN IRT09J

When the browser window is in Fullscreen mode you cannot leave this mode. The “shrink-box” is displayed in the upper-right corner but it is greyed-out and cannot be activated. My only option is to shut down Brave and open a new window.
The tablet is a “touchscreen”.