@UCyborg : It's well past midnight here and I had a rough day today (rusty plumbing caused a water leak in one wall of my flat ), so I'll review the linked documentation tomorrow, when, hopefully, I'll be more lucid , but, put in layman's terms, who is right and who is wrong here?
Is UXP doing the right thing by taking into account "z-index=-2", resulting in the image being hidden, or is Chromium doing the right thing by ignoring "z-index=-2" and, thus, displaying the "story-image"?
Thanks in advance !
From file https://cdn.tunwalai.com/lib/bootstrap5/bootstrap.min.css , L96-L104:
.story-image {
margin: 0;
border-radius: 8px;
display: block;
height: 292px;
min-width: 100%;
width: 292px;
z-index: -2;
}