Question about mission planner 1.3.41

Why has the “show airports” option been disabled for flight planning? and why is the radius way too big? :confused:

Specifically, Shoreham airport on the south coast of the UK has an indicated no fly radius of 5.6miles where in reality it should be 2.32miles as indicated here - It’s now called Brighton City Airport but show’s the actual air space restriction.

2.9 miles North West of it is a BMFA registered flying site so it’s clearly not right.