Also didn't have much luck on Alpine 3.20.10 with OpenSSH_9.7p1.

Last two entries in /etc/shadow:

    test:*:20762:0:99999:7:::
    q3k:$6$snip.GgDQNTrqqX.A0:20762:0:99999:7:::

SSHing into test@ with one 'wrong' password then one 'long' password doesn't work. I have UsePAM no and PasswordAuthentication yes in my sshd_config.