Bug/issue with modern news thumbnail if team site has header image

We cannot specify the thumbnail image,  it is decided for us by Sharepoint - this is a real problem for content managers !!

i.e.  Sharepoint will automatically set the thumbnail image based upon the 'first' custom image it finds in the news article.  So if I use a custom header image it will pick that for the thumbnail too.

This is a real problem because quite often we need to select different images because of the difference in aspect ratio.  i.e. What works at thumbnail ratio doesn't work at super-wide ratio in the header.

SEE example attached - [Thumbnail and header]- it just doesn't work !!

We need to have the ability to set a specific thumbnail image 'independently' of the images used in the new article page.