Writer: Same header on both pages are not working right

I am trying to format a header so that I have one header on the left page, and a different one on the right page. I have the ‘same content on left and right pages’ UNCHECKED, but it is still forcing the same content to both pages

Please attach a sample file, reduce the size as much as possible without private information, and paste the information in Menu/Help/About LibreOffice, there is a copy icon.

And don’t forget to mention OS name, LO version and save format.

If you saved DOCX, successive edits resulted ultimately in one page style per page which renders the Same content … checkboxes completely useless.