The BibTeX section of Special:CiteThisPAge is somewhat broken, at least when accessed from Commons (noticed by user Aguadopd, cf. https://commons.wikimedia.org/w/index.php?oldid=255372121&diff=255373365).
In https://commons.wikimedia.org/wiki/Special:CiteThisPage/Example_images#BibTeX_entry the part after the url entry starting with the note is not part of the code block, but it should.
//appearance now://
```
@misc{ wiki:xxx,
author = "Wikimedia Commons",
title = "Example images --- Wikimedia Commons{,} ",
year = "2017",
url = "https://commons.wikimedia.org/w/index.php?title=Example_images&oldid=244003219",
```
note = "[Online; accessed
16-August-2017
]"
}
//appearance expected://
```
@misc{ wiki:xxx,
author = "Wikimedia Commons",
title = "Example images --- Wikimedia Commons{,} ",
year = "2017",
url = "https://commons.wikimedia.org/w/index.php?title=Example_images&oldid=244003219",
note = "[Online; accessed 16-August-2017]"
}
```
Since German is my natural language I also checked the German Wikipedia, and it’s broken there, too: https://de.wikipedia.org/wiki/Spezial:Zitierhilfe/Beispiel#BibTeX-Eintrag
When accessed from English Wikipedia I just see the slightly weird line breaks in the note (https://en.wikipedia.org/wiki/Special:CiteThisPage/Example#BibTeX_entry) – I’m not able to check this now, but I am quite sure, that the line break between the date and closing bracket will create a space, though there should not be one.