Spun out of T256758.
^ that was why I was getting confused. :)
Opening the following links in iOS shows the problem (you do need to be in the visual editor, not the source editors.
https://en.m.wikipedia.org/wiki/User:TheDJ/sandbox_phonenumber
https://en.m.wikipedia.org/wiki/User:TheDJ/sandbox_phonenumber?venotify=created#/editor/all
Does anyone know if there is a Mobile interface specific flag on a url that I can use to force usage of the visual editor ? Otherwise I need to explain to apple engineers which buttons to push :)
Or.. perhaps its because we do some dom fragment loading before it is inserted into the document and therefor the fragment doesn't respect this document setting ?