Microsoft Edge is up to date.
Version 79.0.309.7 (Official build) dev (64-bit)
Windows 10 Pro version: 1909, build 18363.418
I have the latest version of .NET Framework, etc.
My only browser extension is Dark Reader. It was turned off for this site and when I disable it, I still get the same effects now.
Perhaps a more likely culprit is the interaction of your page information (.CSS or whatever) with my display resolution settings. I am projecting my laptop to a 27-inch Dell monitor. Perhaps with your new NavBar, the web page formatting does not play nicely with the way my computer wants to project the screen? But prior to your new NavBar, my computer had no problems displaying pages from your site. So whatever is going on with my computer is probably directly caused by the new coding behind your site. I haven’t noticed anything funky about any other site that I visit.
I can live with whatever is going on so there is no pressing need from my perspective to fix it and maybe I’m the only one with a computer and display, etc., that’s having this problem. As a former “Windows Insider,” I’m used to living on the bleeding edge (I got tired of sacrificing my computer and SSD writes to Microsoft!).