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I had this done and it did not fix it. I notice when i press down on the roundish black plastic thing in the bottom left corner it goes away. it seems to be coming from that specificallyThere is a TSB for it.
Kit here:
Kit Rear Window Repair ML3Z-16423B99-A | OEM Parts Online
Kit Rear Window Repair ML3Z-16423B99-Aford.oempartsonline.com
It did it on my 23 as well. I just bought the kit and did it myself. it took a few minutes and fixed the issue.