After adding TimerRollbackRegressionIntegrationTest with droolsjbpm-integration#2682 , these tests of TimerIntegrationTest are failing due to a collateral effect because the timer was triggered but still active:

[INFO] [talledLocalContainer] 23:49:16,181 ERROR [stderr] (EJB default - 2) java.lang.RuntimeException: No scheduler found for timer-project-PER_PROCESS_INSTANCE-timerServiceId
[INFO] [talledLocalContainer] 23:49:16,182 ERROR [stderr] (EJB default - 2) at org.jbpm.persistence.timer.GlobalJpaTimerJobInstance.call(GlobalJpaTimerJobInstance.java:78)
[INFO] [talledLocalContainer] 23:49:16,182 ERROR [stderr] (EJB default - 2) at org.jbpm.persistence.timer.GlobalJpaTimerJobInstance.call(GlobalJpaTimerJobInstance.java:50)
[INFO] [talledLocalContainer] 23:49:16,182 ERROR [stderr] (EJB default - 2) at org.jbpm.services.ejb.timer.EJBTimerScheduler.executeTimerJobInstance(EJBTimerScheduler.java:128)
[INFO] [talledLocalContainer] 23:49:16,182 ERROR [stderr] (EJB default - 2) at org.jbpm.services.ejb.timer.EJBTimerScheduler.transaction(EJBTimerScheduler.java:222)
[INFO] [talledLocalContainer] 23:49:16,182 ERROR [stderr] (EJB default - 2) at org.jbpm.services.ejb.timer.EJBTimerScheduler.executeTimerJob(EJBTimerScheduler.java:120)