Switching a Shadowsocks-2022 inbound between ciphers of different key sizes
(e.g. aes-256 <-> aes-128) resized the server PSK but left existing client PSKs
at the old length. xray rejects a wrong-length uPSK, so links stopped
connecting. Regenerate mismatched client keys on inbound add/update, mirroring
the single-client form's existing self-heal. Affected clients must re-subscribe.
MHSanaei