What happens in Firefox or Edge? Also, do you have any idea what the age of that system happens to be? The latter question is because if the web app is of a certain age, they could have used all sorts of HTML extensions that were exclusive to IE that never made it out to other browsers, and there were a lot of them. I imagine NVDA will be carrying anything along related to IE that was written during the time when those extensions were still being pushed by Microsoft.
Brian - Windows 10 Pro, 64-Bit, Version 1809, Build 17763
Growth for the sake of growth is the ideology of the cancer cell.
~ Edward Abbey