When user limit is enabled on a form, the admin_closed message is shown to subscribed users with the permission 'submission_update_any'.
Create a form, with a limit user 1.
Create a submission on the form with a user who has the permission 'sumission_update_any'.
The "This webform is closed. Only submission administrators are allowed to access this webform and create new submissions." message is printed, below the limit_user_message.
At this point, the webform is not closed. This is confusing for these specific users.
Remove the WebformMessageManagerInterface::ADMIN_CLOSED message from when checking user limit.
Active
6.3
Code
We need to test submission admins to ensure the form is closed. This is working as designed. You can use the patch AS-IS