The issue happens because the banner was created behind the scene. If you set up the scene size 200x200 then you should create the banner inside these 200x200 and don't cross the margins.
If you need to cross the margins, then set the mask on the top of all the elements with х=0 y=0, the width and height is the scene's params. Please don't draw in the first frames the objects which cross the margins. Move them to the second frame.
You can download the attached archive with banners' samples.