Since the recent Camera Raw update on 12/10/20, the program's workspace is too large for my
display. The right edge and bottom edge of the program cannot be viewed. The workspace size seems to be locked and work cannot be saved or the program even closed at all. It cannot be closed with Windows Task Manager either. I must manually restart my computer to reset. I have been using Camera Raw for years and it has always fit my monitor's work space.
Should be resizable. But if the GUI extends past what you can control, try altering your display resolution so you can see the entire GUI, size it down a lot smaller, then maybe change it back to the original resolution.
Author “Color Management for Photographers" & "Photoshop CC Color Management/pluralsight"