Air conditioning Ford Falcon

Hello together……well…because I don’t really know where to go with my request, I just post it here. It’s an Australian Ford but the problem could also be a very general one, not linked to the model. On days with increased humidity and normal temperature, one can see light “steam” coming from the air outlet openings of the air conditioner in the interior. The steam is odorless and only easily perceptible. At first I thought that some twas was sucked in from outside, which is not the case. Is it more related to the humidity or can result from a leak ( somewhere in the circuit) a odourless light fog ? With off-off air conditioning it settles. Maybe the one or the other has an nTip or an idea…… would be very pleased about it. Greetings The Moose