User blog comment:The M.E.O.W. King/Help/@comment-366087-20131218161522

Seems there is something in the customization of this wiki's jscript or CSS which is blocking the load-in of VisualEditor's tooldbar, which is the phase y'all are stuck in.

You can still access the Old RTE "Wiki Visual Mode Editor" by clicking the down-arrow next to "EDIT". However, that is a temporary workaround. The Old Visual Mode editor will be phased out sometime next year.

Source Mode will remain. Personally, I use Source by default. It is a much more powerful method of editing with more tools than either of the Visuals.