Digital signature from Okular is not shown

[OndraM]

Attach (recommended) or Link to PDF file here:
signature.pdf

Configuration:

• Web browser and its version: Firefox 114.0.1
• Operating system and its version: Arch Linux
• PDF.js version: bundled in Firefox
• Is a browser extension: yes

Steps to reproduce the problem:

1. Open PDF with digital signature created in Okular

What is the expected behavior? (add screenshot)

Digital signature stamp should be displayed (as at is properly renderd in Okular, Evince, Acrobat, Chromium...)

What went wrong? (add screenshot)

The stamp is not displayed in the document (however note it is displayed in the preview in sidebar).

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Note - this is a digital signature created in Okular from KDE project (See https://docs.kde.org/stable5/en/okular/okular/signatures.html and https://faq.tickets.tu-dresden.de/otrs/public.pl?Action=PublicFAQZoom;ItemID=620 ).

[calixteman]

It's a regression from #16110.
The signature has the flag NoRotate, hence it'll use its own canvas but there's no signature element in the annotation layer to have it.