Using Quarkus 3.8.3 built using latest dd-trace-agent (1.31.2) in native mode with Liberica Native Image Kit 23.1.2+1 (Java 21.0.2+14) gives us a lot of logs with:

Cannot decode v0.4 traces payload: msgp: attempted to decode type "array" with method for "str" at 0/2
Cannot decode v0.4 traces payload: msgp: attempted to decode type "array" with method for "str" at 1/2
Cannot decode v0.4 traces payload: msgp: attempted to decode type "array" with method for "str" at 2/2

Is there a way for us to now what is really happening?... since this is auto instrumentation I would imagine that is either something in the auto instrumentation or in the agent running in the side car.