This was mentioned in the comments at Bug 50945. See https://en.wikipedia.org/w/index.php?title=Isotopes_of_thorium&curid=2526861&diff=569562416&oldid=569407993 for the latest example of the problem. " a[[Age of the universe|ge of the universe]]" is not a desirable wikilink.
It might be related to capitalization of the first letter in the link.
Version: unspecified
Severity: normal
URL: https://en.wikipedia.org/w/index.php?title=Isotopes_of_thorium&curid=2526861&diff=569562416&oldid=569407993