A .Net Agent (usually backend agents) sends excessive traces that are not for transaction tracing, sampling, auto tracing, etc.
Engineering has discovered there is an issue where the upstream agent triggers transaction traces in the downstream agent. The agent was propagating traces regardless of there is a tail filter or not when introscope.agent.transactiontracer.tailfilterPropagate.enable is set to true.
Normally you enable this (Set to true) setting on all desired agents to include backend trace data (for example, from the SYSVIEW extension) with Transaction Traces.
From the upstream JVMs, disable CPTT (cross-process transaction tracing) or set introscope.agent.transactiontracer.tailfilterPropagate.enable=false and restart IIS. This will be fixed soon in a future release.
Note that this issue does not happen with Java Agents.