According to the original reporter, the bug is still exploitable and that's why the issue on the bug tracker got hidden again.
> OH NO I JUST REALIZED THIS IS NOT ACTUALLY PROPERLY FIXED AND STILL WORKS
> even worse, edge no longer even makes the download menu pop up, so it's completely silent js rce that keeps running even after you close the browser !!
> all from just visiting a single website once !!
> issue set to private again, hopefully it'll get fixed properly this time :p
> OH NO I JUST REALIZED THIS IS NOT ACTUALLY PROPERLY FIXED AND STILL WORKS
> even worse, edge no longer even makes the download menu pop up, so it's completely silent js rce that keeps running even after you close the browser !!
> all from just visiting a single website once !!
> issue set to private again, hopefully it'll get fixed properly this time :p