Top cat whisker issues

Has anyone ran into issues with the inside top cat whiskers coming apart and leaving black sticky streaks on the inside of the glass?

I have installed all new top cat whiskers, all new glass, and made sure all the windows are adjusted properly on my 1969 Dart.
About the 15th time the drivers window was rolled down, I noticed the inside felt delaminating from the metal and leaving black residue all over the inside of the glass and stainless trim. I figured it was just a fluke on that window, but now they are all doing it. I would say I purchased the Top cat whiskers around 2014-2015. Maybe a bad batch?
We have used Top cat whiskers on a couple 67 B-bodies, and they have always fit and performed well.