Today I reverted back to 6.1.3 Community because I have a problem with a document. It has digital signatures embedded and rendered as unique pages. With 6.1.3, the signature is correctly displayed as an image when using "getPageImage()".
With 6.2.5 it renders a black image.
To respect the owner privacy I can't upload the PDF document on the forum.
It's hard to say without the actual file. But the digital signatures are rendered using a annotation subtype using regular PDF notation. This appearance is actually unrelated to the integrity of the digital signature it's self.
So that all said the regression is likely do to an image decode issue.