Apr 14 2019
Krinkle's image above is not what Firefox or Chrome show for me. I see the player not below but to the right of the score, slightly above. https://screenshots.firefox.com/DFTNorXXoFXr8kN1/test2.wikipedia.org
Mar 18 2019
A baffling example can be seen at en:Help talk:Score#Image size.
Jan 23 2019
The faulty behaviour at https://en.wikipedia.org/wiki/Five_Little_Ducks disappears when some trivial changes to the Lilypond code are made. The smallest change I could introduce that would change the behaviour was to insert a space between the first \bar and the empty string ("") following it: from \bar"" to \bar "". (I also suggest that those \bar constructs are unnecessary/wrong and ought to be removed.)
Sep 6 2018
Jul 28 2018
Why? The current behaviour, which for years (since inception?) showed the redirect's target, is more informative than showing the redirect itself – there's nothing to see. If one wants to open the redirect from popups, the 3rd link above explains how to do that.
Sep 1 2017
That doesn't happen here (Chrome 60.0.3112.113; Firefox-64 55.0.3. When I go to https://pt.wikipedia.org/w/index.php?title=Vac%C3%BAolo&action=history and hover over the time stamp of the edit at 16:30 1 June 2017 (UTC) – that's currently the most recent change, the URL you mention appears in my status bar, and the popup displays properly the first two paragraphs and the illustration.