User encounters issue with duplicate page slug in Sanity Studio

Hi all, new to Sanity Studio. I duplicated a page to try out some changes I want to make to the original. I didn't publish the duplicate - just viewed the edits in preview. I clicked to another page, but now I can't seem to find the duplicate page in my studio. Now if I try to make any edits to the original, I get an error that the slug is in use. Curious if anyone has seen this before?

Are you using a custom desk structure?

Yeah - I got sorted. Thanks