Actually the point I was driving at is the Windows shell itself fell for the exploit when I put the link on the Windows Clipboard and pasted it into the FireFox address bar. FF never got a chance to pass/fail, it was just being used for an edit field.
Case in point, copy the link to the clipboard and paste it into Notepad … It comes off the clipboard as apple.com
Strange. Mine worked - it just pasted the url direct. Do you have something else in the background that might be the cause of it?
I'm not really a fan of addons, so there shouldn't be.
I tried it starting with this page loaded in different browsers:
IE got the link hover name correct and threw a Punny error on navigation to xn--80ak6aa92e.com, but botched the paste (аррӏе.com)
FF got the link hover name wrong, navigated to "Apple.com", but got the paste right (xn--80ak6aa92e.com).
Edge got hover link right, navigated to xn--80ak6aa92e.com, but got paste wrong (аррӏе.com).
SlimJet got hover link wrong, navigated to "apple.com", and got paste wrong (аррӏе.com).