Subversion Release Manager plugin run builds for teh same revision

Hi, i register it to the subversion component while i can't find the name for Release manager.

I notice that when i have enabled Release manager and SCM schedule is configured in the way that build take longer than the check frequency then the jobs are added till all slots will be used. Even if i disable concurent build it do the same thing. This is not happen when i use pure subversion plugin.