From the image of the captured data that is sent when telemetry is "off", a few ...

From the image of the captured data that is sent when telemetry is "off", a few bits are obviously Windows-style UTF-16. The GUID is obvious, and is that an assert error message? Very strange...

    prod
    e5ff4669-311a-0933-dee2-9444eee86460

    instrumentation.cpp
    Instrumentation::StartQosExperience
    (Utilities::HashMapContains(_qosUXScenarioDataById, scenerioId) == false)
    Assertfailed: (Utilities::HashMapContains(_qosUXScenarioDataById, scenerioId) == false):
    Instrumentation is active when we try

(it cuts off after "try")