Bug overview description.

The Wiki section won't allow me to edit preexisting pages. Whenever I click save, it sends me to https://e621.net/wiki instead of updating and reloading the page as usual. Creating new pages may still work.

Judging by the error message, I think it's treating the edit as an attempt to create a new page.

What part(s) of the site page(s) are affected?

Wiki edit page.
https://e621.net/wiki/edit/insert_tag_here

What is the expected behavior?

Wiki page should accept changes and load updated page.

What actual behavior is given instead?

Clicking Save sends me to https://e621.net/wiki instead.

Time of incident (if applicable).

About 30 minutes ago.

Can you reproduce the bug every time?

Yes

What steps did you take to replicate this bug?

Try to edit a wiki page and click Save.

Errors or other messages returned (if any).

"insert_tag_here" already exists

Well, I did mess with the wiki stuff a little bit, but I don't think it would cause this. Investigating. Will see what I can turn up.

Thank you for the report.

EDIT: Confirmed. Working on a fix.

Making pages seems to work fine, so it's just editing them that's broken.

Pushed a fix for this. Editing of wiki pages should work again.

Yep. Fixed.