Thread:Project:Support desk/Show WikiTextEditor and Show RichTextEditor option not avaliable/reply (4)

Assuming the switch is created by JavaScript, the cause may be a JavaScript error in MediaWiki code (related or unrelated to the RichTextEditor extension you use) that's preventing them to show up.

Open the error console in your browser and look for any JavaScript error you may encounter there, and maybe figure out what extension is causing the problem and disable it.