this is probably because many of the aircraft you encounter early in the war are hurricanes and kingfishers etc - they dont have the light
as GWX progresses the war, more PBYs and Martin Mariners and Wellingtons etc are spawned further out to sea... so in a sort of "work around" kind of way, the leigh light does show up when its supposed to... there are just not very many spawnings of aircraft equipped with it in the early war which would explain why most players dont encounter it until the proper time
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