This is a new feature that was implemented in order to allow print studios to provide exact wrap options. It allows you to specify how much of the image you want to offer as a wrap.
Log in to your Art Storefronts Control Panel and click on the store you want to work in. We will be working in the store titled Upload Store.
Click on the tab titled Styles.
Find the section labeled Framing and set the slider to the Off position.
Click Save.
Scroll down until you see the Image Overflow New option and set it to On.
Click Save.
Scroll down to your Custom Finishes and click Edit on the one you want to work on.
Find the section labeled Load Frames When Selected and make sure the slider is set to On.
Then, put a check mark next to the Compatible Media Type. This should be Canvas.
Scroll down to Width Needed For The Wrap and set the width.
When you are done, click Update.