Elastic Java APM Agent breaks trace logging for SpringBoot

[nefsir]

Please find below description along with repo and reproduction steps.

Describe the bug

Trace id in log line is missing when using APM Java agent.

Steps to reproduce

1. Use code from repo: https://github.com/nefsir/apm-trace-id-issue
2. Run project and call /dummy endpoint. Log line contains trace id.
3. Instrument with latest APM (-javaagent:{path-to-agent}/elastic-apm-agent.jar, version that I use is added to repository).
4. Run project and call /dummy endpoint. Log line does not contain trace id.

Expected behavior

Instrumentation does not impact trace id logging.

[nefsir]

From further testing I can tell that disabling instrumentation of opentelemetry solves the problem, not sure what impact it makes.

[jackshirazi]

Hi, disabling opentelemetry instrumentation just means that OpenTelemetry API calls are not handled, if you are not using any OpenTelemetry API it's fine. Please could you re-try with our latest agent and feedback if it's still an issue