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That sounds like the problems that happened when they switched traffic signal lights from incandescent to LED. The incandescent lights put off enough heat to keep all the lights defrosted and visible, while the LED versions could be blocked by heavy snow/ice.

Better than the dew and ice of the inside like with single pane windows!

I expect I would consider that charming, but I can imagine it gets annoying after the first week

My windows do that - I still think it's pretty fun even after some time.