Preview Button not showing updates after clone

Here’s my issue –
1. I use the “clone” link to duplicate an existing page.
2. I make changes to the new page.
3. When I try to preview those changes, they don’t show up. Instead I only see a preview of the original page I duplicated.
4. If I Publish the page, the updates I made are all there. But the Preview is still of the originally duplicated page.

This didn’t happen before the WP update.

Currently using
– WordPress 5.0.2
– Theme: Enfold