I was seeing the same, also with both tcpip and pdl-tcpip/mlp_tcp.pdl. Opened a ticket this morning, if only so Infor is aware this affects more than one customer.
I’m running into the same thing in our non-prd env, following an upgrade from 6.2.2 to 6.2.6. Even with verbosity turned up, there doesn’t appear to be any other related logging.