Euro city light- fogged

[timreid]

Just a few months ago I connected the Euro city light in my headlamps, a neat look. Today it was a rainy/humid day, had my city lights on, and I notice that Euro lens on the inside was fogged, has anybody notice if your Euro lamps do this? I thought maybe it was due to the heat of the 5w bulb/humid weather, and I'm a little concerned if the moisture on the inside lens could cause damage.
Thanks, enjoy your drive, timreid