Aspose.Pdf does not detect signature

SignatureLab.zip (2.4 MB)
Pdf Concatenation fails due to some signatures but when I try to remove the offending signatures Aspose.Pdf.Facades.PdfFileSignature fails to detect them.

@theblomskog

We have logged an issue as PDFNET-50746 in our issue tracking system for further investigation. We will look into its details and keep you posted with the status of its correction. Please be patient and spare us some time.

We are sorry for the inconvenience.

Is there something going on with this one?

@theblomskog

The issue is currently under the phase of the investigation. Regretfully, it could not get resolved due to other pending issues in the queue logged prior to it. However, we will surely inform you as soon as we have some updates regarding ticket resolution. Please spare us some time.

We are sorry for the inconvenience.

@theblomskog

We have investigated the ticket. The source file (50746.pdf) does not contain digital signatures.
PdfFileSignature works with digital signatures.
We attached example of signed file.50746.pdf (2.4 MB)
blank_signed.pdf (71.0 KB)