Test fails about 1% of the time on ci.wildfly.org:
https://ci.wildfly.org/project.html?buildTypeId=&branch_WildFlyCore_PullRequest=__all_branches__&tab=testDetails&projectId=WildFlyCore_PullRequest&testNameId=-3304598798054976871&itemsCount=50&order=TEST_STATUS_DESC&page=1
AESH-459 TerminalConnection synchronisation issue