"Header Row" not working in the new editor

Summary

With the recent editing improvements, when the user tries to create a new table, the formatting of the header row will not be applied to the published version. Specifically, the row is only used as a header while on edit mode. After publishing the page, the row does not have the text in bold (usually used in the headers, by default).

Steps to Reproduce

1. Create a new Meeting Note/Blog/page with the new editor
2. Add a new table
3. Make sure to add text to the header and publish the page

Expected Results

The header should be using a bold font/match with the "editing" version of the same.

Actual Results

The text inside the newly created header row is displayed as a simple text/normal row text.

Notes

• Recorded a video and attached to this case while reproducing the issue

Workaround

No workaround at the moment.