Hi. I was humming along designing a circular logo when the ellipse tool stopped making circles. Instead, It made dotted squares which disappeared unless I selected them. I must have hit something in my haste but I don't know what. My searches on the subject turned up one discussion in 2009 but nothing definitive about how to fix the issue was suggested. The man who inquired seemed to accidently fix it but gave no details. Can someone tell me what happened and how to fix it?