Simply try to create a page and you will see the Main page preloaded instead of the expected page:
https://en.wikinews.org/wiki/Wikinews:Writing_an_article
https://www.mediawiki.org/wiki/Extension:InputBox#Example
https://pt.wikisource.org/wiki/Wikisource:Ferramentas_para_novos_poemas
Version: master
Severity: normal