Ladies & Gentlemen, why not avail yourselves of Microsoft Windows & Office Accessibility Support?   U.S. Toll Free:  (800) 936-5900

US Microsoft & Windows Accessibility Support Webpage

UK Microsoft & Windows Accessibility Support Webpage

When you can go to the source, or close to it, at no cost it makes sense to at least give it a try.  Even more so when the issue crosses products, which, as you've already noted, suggests the issue is on Microsoft's end.
--

Brian - Windows 10 Pro, 64-Bit, Version 1909, Build 18363  

Power is being told you're not loved and not being destroyed by it.

       ~ Madonna