Narrator no longer reads `role=math` since 1809
In Windows 10 version 1803, Narrator could read `<span role=math aria-label="message m">???</span>` as "message m". In Windows 10 version 1809, it seems that Narrator completely ignores this span element.
Please also vote for this feedback in Windows Feedback Hub: https://aka.ms/AA5f2tq
Thanks for your feedback GL. Have you tried upgrading to 1903 (Windows 10 May 2019 Update)? If you haven't try opening Settings (Windows Logo Key + I) and navigate to "Update and Security" > "Windows Updates" > "Check for Updates". If upgrading doesn't work please let us know and then we will pass this on to the engineering team. Please continue to leave your feedback and upvote posts that you agree with.