Microsoft Edge Read Aloud Feature Not Working with eLearning Courses

I have recently discovered Microsoft Edge's read aloud feature that displays when accessing eLearning courses via an Edge browser. See attached screenshots.

However, this feature is not working properly. I am finding that, when activated, it reads the title slide over and over again, regardless of which slide is actually being viewed, or worse, it reads the menu controls repeatedly, saying stuff like 'Main Slide' or 'Menu' each time the play icon is selected.

This is definitely a Microsoft Edge feature as it doesn't show up when courses are viewed via Google Chrome. And it also displays regardless of the platform / LMS used to access the course (i.e. our main LMS and also when viewed via ScormCloud), so it's not an LMS feature / issue.

Has anyone else encountered issues like this? If so, how did you fix them? I'd be happy with just disabling the feature if it can't be fixed, but I can't even see how to do that. Any advice would be much appreciated. Thanks.