Notices "allow this section to be collapsed"

I love the notices and have used them heavily since they came out. But, I’ve never been able to figure out the “allow this section to be collapsed” feature. Whether toggled on or off nothing changes and I’ve never seen it work. Is there something else I need to do?

Hey @onlymatt - this is actually a visual bug, that setting shouldn’t be there for notices, it’s only meant to be there for titles