Image Files not dowloadable in BigPicture Theme

I wonder why in the downloag-link icon in Items/show.php does not work?

the Icon-link to enlarge the Image file works fine and the full screen mode too.
Does anybody had a similar problem?

Can you share what versions of Omeka Classic and Big Picture you’re using?

I think this is a bug that we’ve fixed but not yet released the fix for.

OMEKA Version 3.1.1 and the latest Version of Big Picture Version 1.6.5.