The NAV lights on the 787 are staying in the position where they would be without the wing flex. That causes them to be below the wings instead of the tips
Do you have any 787 mods installed?
Only the livery from the liveries megapack.
Go without that and see what happens.
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Even without mods the problem is there but only when zoomed out a bit. if I zoom in the lights jump to the correct position. Graphic settings are on medium presets.
As I have seen this is related with camera zoom. If you zoom out to far away from airplane this bug happens, I have same issue and if I stay my outside zoom not far way from 787 the lights are fine.