Public SSH Key Attribute

I have connected gitea to LDAP, user Authentication into a group is working, but I cannot use the “Public SSH Key Attribute”, its still asking for the ssh key password, which is none and shouldn’t be asked for. Is is necessary to set up a filter?

The attribute itself is working, its possible to login to the Server via SSH and a script is fetching the key from LDAP.

Git Version: 2.11.0
./gitea --version
Gitea version bbf9abd built with: bindata, sqlite

LDAP contains only public part of the key so gitea can not control if your private key is with password or not.