Thanks for your bug report. It looks like Microsoft Edge does not support DDE, which means that the standard method of using WWW_GetWindowInfo via DDE will not work.
Unfortunately, there does not seem to be another method of retrieving the URL from Microsoft Edge (or Google Chrome), other than a hack that requires searching for window class names (which can change over time) of browsers, using the
AccessibleObjectFromWindow() API to iterate through thousands of child objects while performing a regular expression match on returned values to find an item that
looks like a URL in the hope (since it is not guaranteed) that it is the active URL. To make matters more complicated, Edge and Chrome do not include http:// or https:// in the result, so there is no way to retrieve that. This method does not sound very reliable.