Pen at the hinge of the trunk flap devoured

By chance I discovered today the crooked “stick” on the hinge, which fell immediately when touching. Does Smart really not use winter-resistant material here? For a slightly over 1.5-year-old vehicle very dislocating! Only because I planned a workshop visit tomorrow anyway, I get a little excited but if you had to go back to the workshop for such a small***, it would make me very angry (time is money after all).