I noticed in the recent previous builds MFP opened up IE, but then IE closed and it opens Edge. It was weird behaviour, but it worked.
In 8.10.1.1 something has caused a regression, as now it only opens up in IE again. In 2022 nothing should be touching IE. It's particularly an issue as now you're adding direct links to YouTube videos, but those will never open, as YouTube doesn't support IE at all (and you can't copy the address from the MFP home screen).
More pressingly, IE I believe is actually being entirely deprecated soon. (one duckduck later: next month in fact!).
Best case: can you add a Settings parameter to just default MFP's HTML links to point to a users' preferred browser? Or at the very least the simple solution, just push an update and make links open directly in Edge.