I suggest rust through in the window channel. Did you see the installation
last time? Did they mention anything like a hole was needing repair?
Probably not as the  windshield installation would be delayed and they may
not get the job when fixed.When I removed my 6 windows for van painting, I
found 3 rust throughs.The body shop brazed them closed. POR-15 has a repair
product called por puddy. Use this or the por-15 seam sealer  to close up
the leakers. Get your free cataloge at www.por-15.com . Windshield is in
the archives in spades and it is a rewarding adventure. You can diy.