[Proftpd-user] signature type 'rsa-sha2-512' does not match publickey algorithm 'ssh-rsa'

Hi,

I have a user who when on proftpd version 1.3.5rc1 publickey based auth
worked fine but when using 1.3.7a I see this in the logs..

Why does "Session server hostkey" log "rsa-sha2-512" when all other logs
that show successful logins have just Session server hostkey as "ssh-rsa" ?

mod_sftp/1.0.1[20741]: sent server version 'SSH-2.0-mod_sftp'
mod_sftp/1.0.1[20741]: received client version 'SSH-2.0-libssh_0.9.0'
mod_sftp/1.0.1[20741]: handling connection from SSH2 client 'libssh_0.9.0'
mod_sftp/1.0.1[20741]:  + Session key exchange: ecdh-sha2-nistp256
mod_sftp/1.0.1[20741]:  + Session server hostkey: rsa-sha2-512
mod_sftp/1.0.1[20741]:  + Session client-to-server encryption: aes256-ctr
mod_sftp/1.0.1[20741]:  + Session server-to-client encryption: aes256-ctr
mod_sftp/1.0.1[20741]:  + Session client-to-server MAC: hmac-sha2-256
mod_sftp/1.0.1[20741]:  + Session server-to-client MAC: hmac-sha2-256
mod_sftp/1.0.1[20741]:  + Session client-to-server compression: none
mod_sftp/1.0.1[20741]:  + Session server-to-client compression: none
mod_sftp/1.0.1[20741]: public key SHA256 fingerprint:
46:46:c6:b5:1f:17:0d:1f:64:c7:d5:c6:2a:43:7c:d6:9c:99:7a:da:09:74:91:81:0d:0c:2c:d7:d2:a2:a9:0b
mod_sftp/1.0.1[20741]: unable to verify signed data: signature type
'rsa-sha2-512' does not match publickey algorithm 'ssh-rsa'
mod_sftp/1.0.1[20741]: failed to verify 'ssh-rsa' signature on public key
auth request for user 'xxxx'
mod_sftp/1.0.1[20741]: sending userauth failure; remaining userauth
methods: publickey,password,keyboard-interactive
mod_sftp/1.0.1[20741]: password authentication for user 'xxxx' failed:
Incorrect password
mod_sftp/1.0.1[20741]: sending userauth failure; remaining userauth
methods: publickey,password,keyboard-interactive
mod_sftp/1.0.1[20741]: client at x.x.x.x sent SSH_DISCONNECT message: Bye
Bye (Application disconnected)

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