Thread:BunsenH/@comment-28858167-20170226005911/@comment-24577221-20170226180412

I've tried to edit using both the "classic" editor and the Visual editor as my default. Using an old version of Windows Explorer, I seem to be forced to the "classic" editor regardless -- it doesn't seem to support the Visual editor at all. With the current Firefox, I can use either.

All I can think of for you to try is to change your default editor to "classic", in your profile under "My Preferences" and "Editing". I have no idea why Wikia would treat the category pages differently from other pages. I take it that you've seen this problem consistently: you can edit any of the regular pages but none of the category pages?