This behaviour is to prevent Spam, the reason is simple:
You must have cookies enabled and a Fedora Account System (FAS) account to log in to
Fedora Project Wiki.
Additionally, due to spam edits, as of 2016-08 your account must have at least one non
cla* group to be able to login and edit.
See Join for information on groups to join and contribute to.
to make a change in every wiki you should have to join at least in --> 1 non cla*
group. <-- in another works you have to be a member in another group different to
--> Signed CLA Group (user) <--
although, Why would you like to edit wiki???