Rear door window not staying rolled up...

Anyone experience a rear door window immediately rolling itself down 1/3 the way after you roll it up? Happened twice to me today...had to roll it all the way down then up and after a couple tries it stayed closed. Is this operator error or a system malfunction?

 

This would happen to me if things were wet and a window started to shudder whilst closing. It would also happen on rough (think washboard) roads.

 

I did leave it out in the rain last night...window was wet. That's still really weird that a wet window track would cause that.

 

Happened to me when I first installed window deflectors. I think someone mentioned it was a safety feature if it sense a finger or something it goes down. Had to get the deflector bent and angled into the channel

 

I should have added in my post that is “normal” behaviour when that area is wet. The shudder of the glass traveling along the rubber and felt cause enough resistance that the truck thinks the window is obstructed. If it occurs when it is bone dry on smooth driving surfaces, that is when it would be an issue.