What "Version / Build" are you using? In an early build of 2019, I had the List windows for palettes appearing in the middle of the screen (either monitor). It's okay now, though I still don't have a scrollbar.
When you mention "popup", are these the "Pop-Up Toolbars" that appear with the Local Menu or the "Use Choice…" window (when selecting) or flyouts from toolbars?
I've always used their "PopUp-1,2,3" toolbars and edited them to suit. I've never had much luck with the other toolbars.
The "View" menu is part of the "Menu Bar" toolbar. That's the only toolbar that can't be turned off or deleted.
Designer, Deluxe, (Professional, Expert, Basic), Platinum
Windows 10 Pro (1903), 64-bit