Thanks so much for your feedback.
Changing the refraction mode from “IOR” to “PixelNormal Offset” helped a lot to get a more natural look, as seen in the screenshot below.
But when I increase the “roughness” now to 0.5 for example, the glass gets blurry, but the refraction of the glass object behind the thin sheet appears weird.
Due to the roughness, the reflection intensifies but doesn’t get blurred when seen through another sheet of glass.
Any advice on what might cause this?
Cheers,
Daniel