Yes, you're right. I know that that was the behaviour at some point in the past on OSX. But I tried just now on Windows, FF Nightly and saw nothing. Could be a

Yes, you're right. I know that that was the behaviour at some point in the past on OSX. But I tried just now on Windows, FF Nightly and saw nothing. Could be a change in FF, difference in os's, or something in the library. Not a very helpful comment I'm afraid.