Water in rear lamps

I don’t believe it…with my retrofitted Lexus lights on the Escort I could still understand it…but that my Sandero now also shows such condensed water phenomena…unbelievable. The lights show in the upper area condensed water traces…unfortunately I did not take any pictures..(too shocked and mobile phone all..) Cold to or fro…there must not lie there, right? BTWThe original extinguisher in the K-room was really wet at superminus degrees here in Berlin from outside.. k-room I don’t want to think at all…whereby I couldn’t feel a humidity. In the trunk no liquids were spilled (keep!!), nothing in it what could steam…I’m standing in front of one to two puzzles) But the rear lights are the main topic..has any of you observed (already) with your vehicle? I still have a guarantee..but what should/will the dealer do? Remove and get back in or what? I can also…or does the Sandero somewhere slipholes that make it for helpful tips (as usual here) I am as always grateful! Mr. P.