https://de.wikipedia.org/wiki/Liste_der_Wappen_im_Schwarzwald-Baar-Kreis
When you mouseover the gallery pictures it shows the bracketed ref cite number in thumb mouseover message. I attach a screenshot.
I am not sure that this is new or old behavior but I guess it makes no sense to show the bracketed ref cite number in message when mouseover. And I am not sure how screen readers read it for accessibility for blind people.