PDF URL not altered

Hello
I am testing out MFR for a client. And there seems to be a problem with renaming PDFs. I looked at the logs with a developer and we found this:

For PNG / JPG it works perfect.

In Short like that:

• Rename Media: dummy.png
• New file will be: dummy-test.png
• 3 times something like: File …/httpdocs/app/uploads/2023/03/dummy.png => …./httpdocs/app/uploads/2023/03/dummy-test.png
• 3 times something like: Rewrite content 2023/03/dummy.png => 2023/03/dummy-test.png
• And other 3 times for exceperts

But for PDF it looks like this:

• Rename Media: dummy.pdf
• New file will be: dummy-test.pdf
• 3 times something like: File …/httpdocs/app/uploads/2023/03/dummy.pdf=> …./httpdocs/app/uploads/2023/03/dummy-test.pdf
• 3 times something like: Rewrite content 2023/03/dummy-pdf.jpg => 2023/03/dummy-test-pdf.jpg

Now i am not sure why it only does rewrite the urls to the preview images. I need the plugin to rewrite all links to the pdf file itsfelf as well and think this would be the idea of the plugin.

Is there a setting for this or i am missing something?