Tags from instrument constructor ignored?

[verdie-g]

The following code pass one tag at the creation of a counter and one tag when recording a value. It then prints the metric.

using System.Diagnostics.Metrics;
using OpenTelemetry;
using OpenTelemetry.Metrics;

Meter meter = new("test");
List<Metric> metrics = [];
var meterProvider = Sdk.CreateMeterProviderBuilder().AddMeter(meter.Name).AddInMemoryExporter(metrics).Build();

Counter<long> counter = meter.CreateCounter<long>("my.counter", null, null,
    [new KeyValuePair<string, object?>("AAAA", "0")]);
counter.Add(1, [new KeyValuePair<string, object?>("BBBB", "1")]);

meterProvider.ForceFlush();

foreach (var metric in metrics)
{
    foreach (var point in metric.GetMetricPoints())
    {
        Console.Write($"{metric.Name}{{");
        foreach (var tag in point.Tags)
        {
            Console.Write($"{tag.Key}={tag.Value}, ");
        }
        Console.WriteLine("}");
    }
}

The output is

my.counter{BBBB=1, }

Is it expected that the first tag is ignored?

[cijothomas]

Yes, instrument tags are not supported.
#5478 (comment)