1. Take an existing job which is already polling SVN on the schedule H/7 * * * * and has a single subversion module.

2. Add an additional subversion module to the job

3. At this point every 7 minutes a new build will be started (the approx build time is 4 minutes) despite not check ins to SVN. The subversion polling log shows:

Started on 02-Dec-2014 13:11:01
Workspace doesn't contain https://weburl/svn/directory. Need a new build.
Done. Took 3 sec
Changes found

Despite no changes being found the build gets triggers anyway.

Note: Can replicate using: Using checkout strategy of "Always check out a fresh copy" or "Use SVN update"