Bathroom Window (Drain) Mystery
We have a bathroom with shower next to exterior wall. Window is about 5 yrs old double-pane type. A few yrs ago I noticed a trail of what looked like water droplet stains from one of the drain holes in the exterior frame of the window. I wicked out the water by sticking a piece of compressed paper towel. The water kept accumulating and I kept wicking. After many months the accumulation seemed to stop but recently has started again.
I don't think there is much, if any, direct spray to the interior of the window or the small "shelf" there, just condensation. How does the water get to the drain hole and why does it accumulate or is this normal?