Customer is not seeing the metrics for the WebAPI controllers using new Agent release 10.5.2.15.
This worked by default using the APM agent release 10.5.2.7.
Note: The parameter introscope.agent.dotnet.mvc.actionmetrics.enabled=true is not included by default in the IntroscopeAgent.profile file for APM 10.5.2.15 and later.
Add the parameter introscope.agent.dotnet.mvc.actionmetrics.enabled=true in the 10.5.2.15 IntroscopeAgent.profile file.