Unless, coincidentally, it's a defect from the tint itself just at the right time.
Anyhow, to dig the answer deeper,
first, I will polish the screen 1st;(please recommend me the strongest glass polish aka watermark remover, 755 nuglass? AG?)
second, I'll tear off the tint film before going for replacement.
My first change of the windscreen (hit by stone) the lamination broke in between after about 6 months use. And it got worse later on. From inside looks like got water droplets on the glass, but cannot feel them either from inside or outside.
This screen was hit by stone also and had a small crack point, a light touch and it cracked further so I change it again.
This time the glass had some water marks but I manage to clean it up, but the funny thing is when I applied Rain X on it, it does not bead water but instead smears it. I was like scratching my head. But after about 2 weeks of use then only it started beading water?