Flaky test "Default channels actions.user cannot delete inherited page"

Given user starts with "editor" role and "Channels" perspective.............passed
When user navigates to channel "Hippo Acceptance Project"...................passed
And user creates a new page echo............................................passed
And user publishes changes..................................................passed
And user returns to channel overview........................................failed
And user navigates to channel "Hippo Acceptance Sub Project"................skipped
And user opens the sidenav..................................................skipped
Then sitemap item "echo" is present.........................................skipped
When user clicks in sitemap item "echo".....................................skipped
Then page action "Delete" is disabled.......................................skipped
When user returns to channel overview.......................................skipped
And user navigates to channel "Hippo Acceptance Project"....................skipped
And user opens the sidenav..................................................skipped
And user clicks in sitemap item "echo"......................................skipped
When user selects page action Delete........................................skipped
And user confirms the action................................................skipped
And user publishes changes..................................................skipped
Then sitemap item "echo" is not present.....................................skipped

StackTrace:
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.onehippo.cms7.qa.selenium.invocationHandlers.IframeInvocationHandler.invoke(IframeInvocationHandler.java:23)
	at com.sun.proxy.$Proxy63.leaveChannel(Unknown Source)
	at com.onehippo.cms.hap.community.qa.channelmanager.ChannelOverviewSteps.inBrowserUserReturnsToChannelOverview(ChannelOverviewSteps.java:190)
	at com.onehippo.cms.hap.community.qa.channelmanager.ChannelOverviewSteps.user_returns_to_channel_overview(ChannelOverviewSteps.java:185)
	at ✽.user returns to channel overview(file:///var/lib/jenkins/workspace/brxm_build_release_15.0/internal/hap/enterprise/integration-test-community/src/test/resources/com/onehippo/cms/hap/community/qa/channelmanager/DefaultChannelActions.feature:34)
Caused by: java.lang.IllegalStateException: Breadcrumbs show unexpected number of values.
	at com.onehippo.cms7.qa.selenium.components.ChannelManagerPageImpl.leaveChannel(ChannelManagerPageImpl.java:200)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.onehippo.cms7.qa.selenium.invocationHandlers.IframeInvocationHandler.invoke(IframeInvocationHandler.java:23)
	at com.sun.proxy.$Proxy63.leaveChannel(Unknown Source)
	at com.onehippo.cms.hap.community.qa.channelmanager.ChannelOverviewSteps.inBrowserUserReturnsToChannelOverview(ChannelOverviewSteps.java:190)
	at com.onehippo.cms.hap.community.qa.channelmanager.ChannelOverviewSteps.user_returns_to_channel_overview(ChannelOverviewSteps.java:185)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at io.cucumber.java.Invoker.invoke(Invoker.java:27)
	at io.cucumber.java.JavaStepDefinition.execute(JavaStepDefinition.java:27)
	at io.cucumber.core.runner.PickleStepDefinitionMatch.runStep(PickleStepDefinitionMatch.java:63)
	at io.cucumber.core.runner.TestStep.executeStep(TestStep.java:64)
	at io.cucumber.core.runner.TestStep.run(TestStep.java:49)
	at io.cucumber.core.runner.PickleStepTestStep.run(PickleStepTestStep.java:46)
	at io.cucumber.core.runner.TestCase.run(TestCase.java:51)
	at io.cucumber.core.runner.Runner.runPickle(Runner.java:67)
	at io.cucumber.junit.PickleRunners$NoStepDescriptions.run(PickleRunners.java:149)
	at io.cucumber.junit.FeatureRunner.runChild(FeatureRunner.java:83)
	at io.cucumber.junit.FeatureRunner.runChild(FeatureRunner.java:24)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:79)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:329)
	at org.junit.runners.ParentRunner.access$100(ParentRunner.java:66)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:293)
	at org.junit.runners.ParentRunner$3.evaluate(ParentRunner.java:306)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:413)
	at io.cucumber.junit.Cucumber.runChild(Cucumber.java:185)
	at io.cucumber.junit.Cucumber.runChild(Cucumber.java:83)
	at org.junit.runners.ParentRunner$4.run(ParentRunner.java:331)
	at org.apache.maven.surefire.junitcore.pc.Scheduler$1.run(Scheduler.java:405)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)