URL indicator stays when one mouses over a URL which then disappears before the mouse has left it

[Wise Melon]

I have recently noticed that if I go to a website and then hover my mouse over a link, it will give me an indication of the URL in the standard Firefox way in one of the bottom corners of the browser, however if the link for whatever disappears (for instance if some JS is triggered and it hides the link) the URL indicator will stay there until I mouse over another link, and if there is not another link, then it will just stay there and become a real nuisance.

It sometimes even happens if the page moves down for whatever reason while my mouse is over a link, and it doesn't seem to register that my mouse left the link.

I am currently running Firefox 44 (but first noticed the issue in Firefox 43).

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OS Information:

    No LSB modules are available.
    Distributor ID: Ubuntu
    Description: Ubuntu 15.10
    Release: 15.10
    Codename: wily
    Flavour: GNOME
    GNOME Version: 3.18

[Wise Melon (wise-melon-deactivatedaccount)]

I have also filed a report on this issue upstream: https://bugzilla.mozilla.org/show_bug.cgi?id=1254156

[Paul White (paulw2u)]

Reporter (no longer on Launchpad) has said on upstream report that the issue no affects him.
Marking as "Invalid"