There's a sort of work-around if you input your location in coordinates, eg latitude 51.785590 longitude -0.393054 and then 'update information'
You can find your coordinates on many sites, eg
http://mygeoposition.com/ (find your location and right click where your mouse pointer is)
Oddly, once you do that, the map in our members map displays properly on the 'your entry' page...but don't try to move the marker or you'll lose the map again.