I'm based at Defford/ Croft Farm and a long-standing (as far as I can tell) minor glitch seems to cause it to disappear from the map  when you zoom out. I imagine this is some sort of decluttering but it does not affect other smaller strips locally so I presume it is unintentional....

Once you zoom to scales smaller than 500k we start hiding smaller airfields because of clutter. With a runway of 570m that airfield would count as a smaller airfield, I would have thought.