Transition Problem Photo and Type edges vibrate upon enlarging

I am doing a circular wipe in which the photo enlarges on a white background. The edge of the photo vibrates. I tried a workaround by placing the photo on a white background (panel) before placing it in Fotomagico and it still happens but on the edge of the white panel. This also happens with the edge of white type with a drop shadow on a white background. Why is this happening and how can I eliminate the problem? Thanks

Can you send a sample FotoMagico document to support(at) refering this poso we can have a look?