Some microservices aren't included in tracing


I have six microservices. Only the two Quarkus microservices are being traced. Istio proxies didn’t trace the other four microservices (Angular, pgAdmin, PostgreSQL, MinIO).
Later, the instrumentation of Quarkus microservices improved their traces. I applied it to the other microservices: I added a Jaeger agent sidecar to each of them and configured Jaeger environment variables in their deployments. It didn’t change anything.

Do you have proxies in front of all six microservices? Do those non-traced microservices propagate trace contexts in the apps?