Can not connet if ssh keys have copied to target host

[luwanjia]

I use ssh to connect with target server, and copied the ssh-key to it and anthorized.

And then, use gnome-connection-manager to create one session with @ to connect target host, it blocked.

I login with bash shell again, and delete anthorized_keys in .ssh directory, and try again, it works.

OS info:
Distributor ID: Debian
Description: Debian GNU/Linux 9.4 (stretch)
Release: 9.4
Codename: stretch