Something really weird has started happening upon completing an edit to a wiki page.
Any image that I add gets <figure-inline> before image on page and </figure-inline> after image on page appended to it when I save the edit. This happens via the visual editor and the normal source editor.
Also, each time I edit the page <figure-inline> before image on page and </figure-inline> after image on page is re-added. So after five edits there are five <figure-inline> tags before all images on the page and five </figure-inline> tags after all images on the page.
An example of this can be found on the landing page of the wiki that you host for me: https://wiki.lbcomms.co.za/wiki/Main_Page