In the search results you can get some PDF documents which they should have the PDF link and button icons. The first search results do have them as expected, but the ones that are hidden at first and shown only when scrolling or clicking on the "Show more results" button don't (see screenshot).

Page example: https://www.greenpeace.org/international/?s=ocean&orderby=_score&f%5Bctype%5D%5BDocument%5D=1

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