GNOME 3.34: Zoom (magnifier) and HiDPI
I want to share a YouTube video about the issues due to Zoom feature not taking advantage of HiDPI scaling. Do excuse the flickering, as my computer can't handle video recording at 3840x2160 resolution. However, you can see that as I type, the zoom feature is focusing at the insertion point in the terminal as if the DPI scaling is set to 100% but in the GNOME Control Center, it is set to 200%.
Have a look: https://www.youtube.com/watch?v=9_1Iagt3EQs