Media title or file name not shown on the front end

I’ve noticed that when I look at a media image on the full screen on the front-end, the title of the image appeared on top is NOT the actual title or the file name of what is uploaded.

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But it is derived from the Title property embedded in the PDF file.

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This is a problem for us, and I don’t know how I can change this to the title label I set on Omeka or the file name itself. Could anyone help?

That looks like Chrome’s PDF viewer, is that right?

There’s no way for Omeka to change what’s going to show up there, I think, as it’s just a property of the file itself. You should be able to change it in the actual file, though.