We’ve recently deployed to a new environment using Net Core and found that our Browser monitoring no longer works.
We’ve read the documentation and understand that auto-instrumentation no longer works (https://docs.newrelic.com/docs/agents/net-agent/additional-installation/new-relic-browser-net-agent).
However we have been using the manual instrumentation method as detailed on that page; adding the call to @Html.Raw(NewRelic.Api.Agent.NewRelic.GetBrowserTimingHeader()) in our Razor template.
When checking this on the deployed site it simply outputs the HTML comment " <!-- New Relic Header -->" and doesn’t output the monitoring JS.
The code runs via IIS on a Windows server with the 64bit APM Agent installed. (8.17.438.0)
What have we missed? We’ve enabled it as far as we can tell?
Is there a bug we’ve missed?