Curious to know why would Jabara have its approach and runway lights on with an aircraft on approach to a neighbouring airport.
Because it has to be like this. There may be multiple aircraft on simultaneous approaches/takeoffs at all these airports (there is like 7 of them in the area). Plus Jabara is an uncontrolled airport - pilots usually turn lights remotely (by radio) on such airports and lights stay on for say 20 minutes before a timer switches them off.