The problem comes back with Petals ESB 4.2.3, that's why this issue is reopened. This problem does not occur with Petals ESB 4.2.2.
The problem seems to be solved if we replace petals-log:1.0.1 coming with Petals ESB 4.2.3 with petals-log:1.0.0 from Petals ESB 4.2.2.
The problem does not occur with Petals ESB 4.2.1 & 4.2.2 because petals-log:1.0.0 is wrong (it includes a dependency on petals-message-exchange-1.2.0 instead of petals-message-exchange-1.2.1) and the real fix in PipedDeserializerImpl was commented by mistake.
The previous merge in trunk is right, so no merge required.
Real fix uncommented in branch petals-esb-enterprise-4.2.x