In my case, ss when piped also corrupts the header as it merges
"Address:Port" and "Process" to read "Address:PortProcess":
$ ss -tpnl | head -n 3| tr ' ' '_'
State__Recv-Q_Send-Q_Local_Address:Port__Peer_Address:PortProcess_________________________________________________________________________________________________________________________________________________________________________________________________________________________
LISTEN_0______4096___127.0.0.53%lo:53_________0.0.0.0:*____users:(("systemd-resolve",pid=1045,fd=15))_____________________________________________________________________________________________________________________________________________________________________________________
LISTEN_0______4096______127.0.0.54:53_________0.0.0.0:*____users:(("systemd-resolve",pid=1045,fd=17))_____________________________________________________________________________________________________________________________________________________________________________________
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https://bugs.launchpad.net/bugs/1888494
Title:
ss outputs lots of trailing spaces
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