Did it look something like this ?
This is on the passenger side happened somewhere btw Fredericksburg, TX & Albuquerque, NM. cut a piece of plexiglass to fit, radius and all; secured it with gorilla tape. Itís now weather tight.
The C is at our dealer in MA being fixed. Odd thing is the windows are made by Lippert Components and they only will replace the entire unit not the individual piece.