WatchlistJob use badly initialized XWikiContext

2016-05-10 15:00:00,033 [DefaultQuartzScheduler_Worker-1] WARN  .x.x.s.XWikiHibernateBaseStore - ExecutionContext and passed XWikiContext argument mismatched, for data safety, the XWikiContext from the ExecutionContext has been used. 
java.lang.Exception: null
        at com.xpn.xwiki.store.XWikiHibernateBaseStore.getXWikiContext(XWikiHibernateBaseStore.java:1498)
        at com.xpn.xwiki.store.XWikiHibernateBaseStore.cleanUp(XWikiHibernateBaseStore.java:1137)
        at com.xpn.xwiki.store.XWikiCacheStore.cleanUp(XWikiCacheStore.java:614)
        at org.xwiki.watchlist.internal.job.WatchListJob.init(WatchListJob.java:100)
        at org.xwiki.watchlist.internal.job.WatchListJob.executeJob(WatchListJob.java:209)
        at com.xpn.xwiki.plugin.scheduler.AbstractJob.execute(AbstractJob.java:71)
        at org.quartz.core.JobRunShell.run(JobRunShell.java:202)
        at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:573)