Upon defocusing the InDesing window, the scrollbar disappears.

This issue is creating usability problems - working on 2 monitors, clicking on the other monitor to grab some image or text, then trying to return to InDesign by clicking the scrollbar to scroll to the desired position does not work. Instead, randomly clicking the empty scrollbar randomly scrolls to the left or to the right.
Whoever had the idea to hide the scrollbars had a very bad decision. None of known apps are hiding the scrollbar upon defocus, also, hiding the scrollbar has absolutely no benefits, just drawbacks.
Please stop hiding the scrollbars when defocusing the main window. Lots of users actually want to return to an app by immediately dragging the scrollbar.