Rusolution BUG - getting tabbed to DT when clicking top or bottom of screen

Platform: PC
Game mode: Official Testlive | Private Testlive | Singleplayer
Problem: | Bug | | Misc

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Whenever i use fullscreen or Borderless the resolution get applied but a large area of my screen tabs me out on click.
It looks like it is fullscreen but for example if i hit ESC when the options come up clicking anywhere below settings tabs me back to desktop, when in options clicking apply tabs me out to desktop and it is the same for the top 20% of my screen also.
i’ve tried multiple resolutions in both fullscreen and borderless and issue remains.