Hero image not displayed in Outlook

Your software
My Mautic version is: 4.4.1
My PHP version is:
My Database type and version is:

Your problem
My problem is: Outlook (desktop client) shows error message “The linked image cannot be displayed. The file may have been moved, renamed, or deleted. Verify that the link points to the correct file…” where HERO image should be displayed. The other images in the email are displayed correctly.

Is the HERO element in emails linking the image in a different way than the other elements in the email builder? Or is the problem that the image is in the background therefore Outlook sees it as a possible threat?

Has anyone already found a solution to this problem? Or is it just a bad idea to use the HERO element altogehter?