Edge Insider version yields Internal Error when clicking on notifications.
As the title says. Since the version 15002 of Windows 10 Insider, clicking on a notification will yield this little gem:
The developer console shows this:
Since the version 15002 of Windows 10 Insider
Did you send a bug report to the Edge team ?
That happened to me once on Chrome a little while ago. Refresh fixed it.
Edit: in case anyone doubts.