Confluence table: Auto number column header is not accessible

Issue Summary

The automated column header does not have a heading, moreover it is not editable.

Steps to Reproduce

1. Navigate to "Create" button from header section.
2. Create a new page.
3. Add a table from toolbar options.
4. Navigate to "Insert numbering column" button.
5. Using screen reader, try to access the new ly added header. 
6. Verify that it is not accessible for the users.

Screen Recording 1: Mac/VoiceOver

Screen Recording 2024-04-25 at 12.57.33 PM.mov

Screen Recording 2: Chrome/JAWS

Unable to add content in first column of the added table macro jaws.mp4

Screen Recording 3: Firefox/NVDA

Unable to add content in first column in the table nvda (1).mp4

Actual Results

The automated number column (add a table> hit the "Insert numbering column" button> observe that new column gets added) does not have a header text. Moreover, it is not even editable.

As a result, the functionality associated with the column header is not accessible for the users, they will not able make any changes in the mentioned table header.

Expected Results

Ensure that the automated column header should have a by default text and make it editable so that user can update it.

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available

Environment

MacBook Pro (16-inch, 2019)
macOS Ventura Version 13.6.1
Chrome - Version 120.0.6099.234 (Official Build) (x86_64)
Firefox- Version 112.0.1 (64-bit)
Safari- Version 17.3 (18617.2.4.11.9, 18617)
JAWS- Version 2022
NVDA- Version 2020.3