I never have opened anything that utilizes "Protected View" on my personal PC. I recently just completed a total re-build of the machine from the ground up and still have this issue. I went from an old build that consisted of i7-4770, Gigabyte GA-H81M, 2000MhZ
DDR3 Samsung 16Gb (8x2), Kingston SSD (can't remember the model) Windows 10 (current build as of today), and a GTX 1080 FE. This build had been experiencing this issue for months and again as I've said I have never once used any applications that run in protected
view.
The new build which is MSI Z390-A Pro, i7-9700K, 32Gb DDR4 3000MhZ (16x2) Corsair Vengeance LPX C15, Samsung Evo 970 NvME 500gb SSD, and MSI RTX 2080 Gaming X Trio and still have the exact same issue with the primary monitor leaking the header of the browser
window over into the secondary when maximized.
A permanent fix is needed, not a temporary one. We all paid good money to have the right to use Windows 10 in a stable condition. This is not stable and is impacting user experience with the software. Microsoft needs to address this. It should not be up
to the user to find temporary fixes for months or in some user cases years now.
This is deplorable service to their customers and we need to continue pressing them to fix this issue with the OS.