Lemmy itself doesn't allow posting a link and an image together, at least not in the default UI on lemmy.world. Consequently, apps being able to show them together isn't the go-to expectation.

P.S. Upon reading your comments further below, it's outstanding what an annoying prick you are.

I was thinking maybe some types of Lemmy apps/clients don’t show it? Mine does but I was giving the commenter the benefit of the doubt.

Once I was trying to find info on my server’s administration policies and including time it. Turns out it wasn’t available in my app at the time, I had to go to the website.