If project has complicated name like folder/project-name then buildCurrentPatchesOnly feature does not work because of cancelMatchingJobs gets parametr jobName as full name but for comparing it uses just relative name without folder or parent project item.task.getName()).

https://github.com/jenkinsci/gerrit-trigger-plugin/blob/master/src/main/java/com/sonyericsson/hudson/plugins/gerrit/trigger/hudsontrigger/RunningJobs.java#L236