Unpublished changes alert even after update

Summary

When two users edit a page in Confluence, using Collaborative Editing, and both of them save the draft at the same time, it causes a race condition. All changes are published, but when you edit the page again and hover over one of the user's avatar, it's greyed and with the message "user has made changes that haven't been published".

Steps to Reproduce

1. Have two users editing the same page at the same time;
2. Update the changes, of both users, at the same time as well;
3. For one of the users, the following error will appear: "user has saved changes to this page your changes cannot be merged with theirs." (screenshot error);
4. Both users will see the changes published on the page (screenshots 1 and 2);
5. Have the users to edit the page again;
6. The avatars will be greyed with the message "user has made changes that haven't been published" (screenshots 3 and 4).

Expected Results

All changes published, avatars should be normal when editing again.

Actual Results

Avatar greyed with the message "user has made changes that haven't been published" when actually all changes in the page were already saved and published.

Workaround

N/A