Here is a ticket that matches what I am currently experiencing: https://jira.atlassian.com/browse/CONFCLOUD-76691
I had 2 draft articles that were not yet published. They had titles and one has existed for a couple of weeks. The other unpublished page was created today.
The content disappeared from the older page, but the title remained. The newer unpublished page disappeared completely and was no longer listed on the Page Tree.
Also, I seem to be unable to open a ticket for Confluence in Jira. It does not list Confluence as an option when I select Create in Jira.