Advanced Signature Properties: "Signature was created using …" . Currently says "Not available" but should say "PDF-Over"

[porg]

Reproduction

• Open your signed PDF in Adobe Acrobat on Desktop (Mac in my case).
• It shows your document plus the visual signature seal positioned in the document.
• Click the visual seal which opens this popup:

Signature Validation Status

Signature is VALID, signed by Firstname Lastname.
- The document has not been modified since this signature was applied.
- The signer's identity is valid.

              [ Signature Properties... ]  [ Close ]

Click "Signature Properties..."

Signature Properties

A large window with

• Validity Summary
• Signer Info

At the buttom the buttons:

[ Advanced Properties... ] [ Close ] [ Validate Signature ]

Click "Advanced Properties..."

Advanced Signature Properties

Signature Details
Signature was created using Not available.
Hash Algorithm: SHA256
Signature Algorithm: ECDSA (Elliptic Curve)

[ Close ]

Outcome

• ✅ When PDF was signed with "Digitales Amt", it says "Digitales Amt". Ideal!
• 🆗 When PDF was signed via the web app it says "asign.ECDSA". Very technical. But at least something.
• ❌ When PDF was signed via PDF-Over it says "Not available". Feels not very trustable.
  • Expected: It should say "Signature was created using PDF-Over".