Not able to change Page Header

Whenever I am changing to a custom Primary Header for individual product pages, the setting turns back to the customizer setting automatically. See ss: https://prnt.sc/264y33v

These are my settings: See ss: https://prnt.sc/264yavs

And therefore the transparent header overlaps the content since there is no header by default, See ss: https://prnt.sc/264xye7

How to fix this?

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