Was driving to town, about 20 or so miles today, and my driver side wiper did this:
Really confused, as I can push it back to place, when car is in park and it works fine, get on highway/interstate going 60-65 and it does that after a couple wipes of the windshield. I fixed it when i parked, and tried it again and it did it again, ended up holding the wiper when i tried using the wiper blade, and then let go when it was supposed to go back down and it went right where it was supposed to go.