ReactorIntegrationTest fails on 5.4.x.redhat-7-6-x

Error processing exchange. Exchange[ID-ci-vm-10-0-147-51-hosted-upshift-rdu2-redhat-com-1585133024929-527-4]. Caused by: [reactor.core.Exceptions$ErrorCallbackNotImplemented - java.lang.AssertionError: expected:<1> but was:<2>]: reactor.core.Exceptions$ErrorCallbackNotImplemented: java.lang.AssertionError: expected:<1> but was:<2>
Caused by: java.lang.AssertionError: expected:<1> but was:<2>
	at org.junit.Assert.fail(Assert.java:88)
	at org.junit.Assert.failNotEquals(Assert.java:834)
	at org.junit.Assert.assertEquals(Assert.java:645)
	at org.junit.Assert.assertEquals(Assert.java:631)
	at org.wildfly.camel.test.reactor.ReactorIntegrationTest.lambda$testFrom$9(ReactorIntegrationTest.java:235)