ssh-keygen -Y sign didn't produce correct signature.

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest version
• Search the existing issues.

Steps to reproduce

Creating new ed25519 key pair: ssh-keygen -t ed25519 -f test
Signing with some random text: ssh-keygen -Y sign -f test -n file test.txt
After putting test.pub to .ssh/allowed_signer , verify signature: type test.txt|ssh-keygen -Y verify -f .\.ssh\allowed_signer -n file -I t2 -s test.txt.sig
Got wrong signature:

Signature verification failed: incorrect signature
Could not verify signature.

Expected behavior

Should verify this signature

Actual behavior

got wrong signature.

Error details

No response

Environment data

Name                           Value
----                           -----
PSVersion                      5.1.22621.4249
PSEdition                      Desktop
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}
BuildVersion                   10.0.22621.4249
CLRVersion                     4.0.30319.42000
WSManStackVersion              3.0
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1

Version

OpenSSH_for_Windows_9.5p1, LibreSSL 3.8.2

Visuals

No response

Start by reproducing the issue with the listed ssh-keygen sign and verify commands in the provided PowerShell environment, using OpenSSH_for_Windows_9.5p1. Trace the signing and verification entry points for Ed25519 signatures. Done means the generated signature verifies successfully with the shown allowed_signer setup.