Topic on Extension talk:InputBox

I'm not sure why but using InputBox is breaking things. I didn't realize it until I go to create a Subpage and see how broken it is.

A simple Inputbox, using preload=Template:Characters creates the page Tester. On this page is a slash-removal link to a subpage History.

The goal is when viewing the page Tester, the link will read as History, and take you to Tester/History when clicked.

What happens instead is the link takes you to /History instead. Which is a subpage of nothing. If you try going to Tester/History through the browser address bar, and put PARENTPAGE on that afterwards, it gives you TEMPLATE:PARENTPAGE as a result.

Does anyone know how to fix this? Or will I have to go back to creating pages with the subst template feature instead?

Actually, more testing seems to make this a flaw in MediaWiki itself.

As I just created a page "Tester2" with subst:Template:Characters in it. And now it's being seen as a template page instead of it's own page. Because the subpage links do not work, and it's parent is Template:ParentPage.

So I'm not sure what is wrong. It seems like something is royally screwing up my MW installation.

Because going directly to a page named "Jason", creating it, typing in for a link to a subpage named History, and previewing it, and it doesn't work right.