Description

Refreshing an open post can cause a user to become invisibly disconnected from a collaborative session:

Step-by-step reproduction instructions

1. Enable real-time collaboration via WordPress Admin -> Settings -> Writing, and check the "Enable real-time collaboration" checkbox. Click the "Save Changes" button.
2. Open a post in tab A, then add a title and content and click "Save Draft".
3. In tab B, also open the post and add content. Both users should see the content synced.
4. Go back to tab A and refresh the page.
5. After refreshing, add more content in tab A. New content in tab A is no longer synced to other peers.

Note that the network panel still shows consistent REST calls to the /updates endpoint in tab A after it is invisibly disconnected from syncing.

Screenshots, screen recording, code snippet

No response

Environment info

No response

Please confirm that you have searched existing issues in the repo.

• Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

• Yes

Please confirm which theme type you used for testing.

• Block
• Classic
• Hybrid (e.g. classic with theme.json)
• Not sure