I am unable to see complete trace spans for subsequent API calls

[nagg-hash]

Hi,

I am using open telemetry with Asp.NET core (.NET 8).
I have configured open telemetry tracing as below in Program.cs

var otel = builder.Services.AddOpenTelemetry();
otel.ConfigureResource(resource => resource.AddService(
            serviceName: "test-app",
            serviceVersion: "1.0.0",
            serviceInstanceId: Environment.MachineName));

otel.WithTracing(tracing =>
{
    tracing.SetSampler(new AlwaysOnSampler());
    tracing.AddAspNetCoreInstrumentation();
    tracing.AddHttpClientInstrumentation();
    tracing.AddOtlpExporter(otlpOptions =>
    {
        otlpOptions.Endpoint = new Uri("http://localhost:4317");
    });
    tracing.AddConsoleExporter();
});

When I run the application and start to hit any GET endpoint, I am able to see complete Trace Activity till storage layer(this was around 25 spans), but if I try to hit any other GET endpoint again I could see only 1 span in Trace activity

So basically I can see complete trace activity for only first call

What's missing in my case?