From a discussion on German Wikipedia: https://de.wikipedia.org/wiki/Wikipedia:Fragen_zur_Wikipedia#Zitations-Bug_im_VE.3F

Problem
References are sometimes added in a wrong format. E.g. from Interferenzreflexionsmikroskopie (German Wikipedia):

[[Interferenzreflexionsmikroskopie#cite note-Patzelt-1|[1]]].

This format results in a wrong display of these references in the article:

• no superscript

Full text search shows that this kind of formatting occurs quite often.

Any idea why this happens?