Contrails not visible on other aircaft (MP & Live AI)

Prompted by a seeing them in someone else’s screenshot I tried to test why I wasn’t seeing them. Flying at high altitude in the right conditions and where my aircraft is generating a visible contrail I am not seeing them on other MP or Live AI aircraft at similar flight levels. Is this a known thing or something I need to adjust in my setting?

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Ive never seen then on MP aircraft either, but I know they exist on AI traffic aircraft.

Yes this is known and there are several topics out there. I for myself have the issue that contrails of live and ai planes are only shown if I with my plane fly higher then 10-15k feet. It is very wired. I never see contrails of other planes when sitting on the ground or flying low and slow.