Automatic circle appearing

Hi, I’m relatively new to 3D printing and stumbled across the Beta Cookiecad site, and have since made many small cutters for polymer clay without any issues.
I’ve recently tried to reprint some designs and even try new ones, but the software is automatically putting a circle around my cutter, which I don’t want.
Despite whether I choose 'Cutter" or ‘Imprint Cutter’ or any other setting, it still appears!
Can anyone suggest why this is suddenly a thing, and more importantly, how I get rid of it?


This is the auto-outline feature. It turns on automatically if your image has more than one part. You can turn it off by setting auto-outline to “off”. In that case it will go back to the previous behavior when it finds more than one separate part in the image and will just use the largest one.