Blured Frosted Glass Material and Directional Light

I have a very simple blurred glass material, everything works great as expected. However, whenever the view/camera intersects with the object, weird edges appear on the corners. I turned off the directional light, and it disappears. Any idea why this is happening?

Do you mean the sort of white sploge the appears on the glass when your camera is near and at a tight angle? It’s the spiral blur and I think it’s unavoidable I’m afraid…

Those artifacts are only visible in the editor viewport. As soon as you render or play in a new window, they’re gone. (Compare top right corner and bottom.)

Thank you!