Not yet, and it's been pretty cold here for both winters my xB has been through. (Atlanctic coast, 1/2 hour NE of Philly.)
I have noticed a few times that they might "stick" just a tiny bit if it rained or snowed and then got dry out.
I have noticed a few times that they might "stick" just a tiny bit if it rained or snowed and then got dry out.