Sorry missed your last line: the url is https://commons.wikimedia.org/wiki/Special:UploadWizard

Thank you for the technical reply. Look at the Upload Wizard page- there is a link labelled leave feedback. I pressed it. I am acting like a typical user- not part of the development team- I headed the ticket- this is not a bug report- I was requested to do so- so I am writing this as feedback- like a favour, iI spent time on writing a comment instead of completing the task I was on. The correct response is to to say thank you for your feedback- it is much appreciated.

Thanks for the response- I am willing to contribute but no-longer have the skills to do innovative coding. However I did try to copy the example from the documentation to my en:Sandbox (well I proved that didn't work) so tried to copy an example to my Mediawiki talk page- that did, I changed the lat/lon to London, previewed it and the map changed. I did another change, and previewed and right clicked on the point I wanted- and a pop-up box appeared with the Latitude/ Longitude and the Zoom. Excellent, I saved it, did a right-click and it had gone! I got the usual suspects instead. So it works when in edit preview mode, but not in normal display mode. At least that gives us a lead. I will dual post this