Currently verifyMidpointTransactionMetrics uses assert.eq to check that "totalContactedParticipants" is incremented by exactly the expected number of participants in the transaction started by the test. However background threads can also run concurrent transactions that increment the "totalContactedParticipants" count. As a result, the test should be using assert.gte instead to see if "totalContactedParticipants" is incremented by at least the expected number of participants rather than exactly the expected number of participants.