Open this page and then click on "Foobar" in the TOC:
http://de.wikipedia.org/w/index.php?oldid=55162461&uselang=en
Note that the anchor is #Foobar
Now see this diff which was done by editing the section. Note the automated part of the edit summary:
http://de.wikipedia.org/w/index.php?diff=next&oldid=55162409&uselang=en
When editing a section, the method that generates the automated paragraph linking mistakenly converts "[[a|b]]" in the heading to "b". This shouldn't be the case with images (a=Image:Wiki.png), as they are ignored by the method that generates paragraph IDs.
Version: 1.21.x
Severity: minor
Whiteboard: aklapper-moreinfo