The static mesh window is having a weird
shadow effect, comes from the uv or?
Hello Michelle0309,
Check to see your light map resolution of you mesh or the object that is actually casting the shadow is high enough to cast a crisp shadow. If the resolution is too low then you will see this type of dithered shadowing. Here is some very helpful documentation on lightmap resolution and lightmap UV’s to help you further explore how to fix the issue.
Lightmap Documentation:
Cheers,