Rain can be seen though glass texture

As you can see in the attachment, rain droplets can be seen though glass texture.

I conclude that it is a visual bug.

Here's the link for the attachment:
https://drive.google.com/file/d/1lCoheMY7yJ4bvc3KSaz8c931F-qtFJBQ/view?usp=drivesdk
https://drive.google.com/file/d/1lFVTbmRw46iS80Zyo9Bbi9Fs81XU8TJa/view?usp=drivesdk