I received my Form 2 printer about two weeks ago, and I’ve just noticed some bulging at the edge of the optical window. Upon closer inspection, it looks to me like the window itself is bulged as well.
Just to reiterate what Walter said above me, if your prints are coming out OK there’s nothing to be concerned about. If you do have worries about any of your results please don’t hesitate to reach out to our support team at the link below!