UI scaling window problems
There are numerous problems with the new UI Scaling Feature when it is set to any size other than the smallest. I've attached several screenshots and a screen recording.
Screenshot 1: New document window. Toolbars slightly overlap the buttons and the ruler.
Screenshot 2: On the right edge of the main window, there is a gap between it and the panels.
Screenshot 3: Bottom of the main window has a white bar along the bottom.
Screen recording: Panels that all collapsed down to an Icon or Icon/Name only don't pop up in the right position when you click on them.
In all of these examples, the bigger the UI setting you pick, the bigger the problem becomes... bigger overlap, bigger gap, bigger white bar, etc etc.
The other major problem is that the UI scaling is also scaling the view of the contents in the main window. For example, a Letter-sized document at 100% fits completely in the main window on the lowest UI setting, but at any larger UI setting, the same document no longer fits in the window unless I zoom to fit.
Aurora Penticton commented
Tested this here as well - exact same issues.
Uwe Laubender commented
Also see into this discussion at the InDesign User Forum:
Collapsed panels glitch with UI scaling
Jeremy AB, 23.03.2022
( ACP )
Jeremy Bohn commented
More info - InDesign 17.2 running on macOS Monterey 12.3, 27 inch iMac