Part of the url is duplicated when entering a fina.org url for an automatic citation in VisualEditor at enwiki.
https://www.fina.org becomes https://www.fina.org/www.fina.org/
https://www.fina.org/news/2596440/world-record-alert-usas-hunter-armstrong-sets-new-global-50m-backstroke-standard
becomes
https://www.fina.org/news/2596440/www.fina.org/news/2596440/world-record-alert-usas-hunter-armstrong-sets-new-global-50m-backstroke-standard
It was reported at https://en.wikipedia.org/wiki/Wikipedia:Village_pump_(technical)#%22automatic_citation%22_bug_when_using_VisualEditor?