Steps to reproduce (according to test-wiki for testing the security tab):
1. Assign a new ACL to an existing series by clicking the ACL-arrow in the overview for the series and then the '+'-Button which shows up.
2. Choose a time in the near future.
3. Choose an ACL
4. Don't check override and don't choose a workflow
5. Click the 'Save' Button
The chosen ACL is not the active ACL after the point of time chosen has been reached. The line vanishes, but the active ACL is not 'applied'
After the point of time you chose has been reached, the chosen ACL should be the active ACL.