Issue Summary

When changing the title of a page, if there are other pages that link to it and those pages share a title with another page in the same space as them, it will trigger an error and the change to the page we are editing will not be able to complete.

This is reproducible on Data Center: unknown

Steps to Reproduce

This may require some setup. Setup steps are as follows:

1. in some space create a page with some title for example "title A"
2. Update the page "title A" to have a new title "title B"
3. create a new page with the original title like "title A"
4. Revert the page "title B" to version 1

reproduce this bug steps:

1. Create a page with any title
2. In any page that has another page whose title is the same as another page in the space, add a link to our newly created test page. (you may need to use the setup steps above to create the name collision or update a page with name collision to link to our new test page)
3. in our new test page, attempt to update the title.

Expected Results

The page updates with the new content and title

Actual Results

The editor produces an error:

We’re having trouble connecting right now
Give us a few seconds to reconnect, and you can resume your work.

The below exception is thrown in our logs:

... A page already exists with the same TITLE in this space. ...

Workaround

Currently known workarounds are as follows:

• Not Changing the title will allow updating the page
• Removing the name collision of pages will remove the problem
• Removing all of the links to the page that you want to change the name of will avoid the issue
• creating a new copy of the page and removing or archiving the old one will work around the issue

You can reach out to Atlassian Support to get information on which pages have name collisions in their space.