when viewing b to a relationship link to contact a returns contact b

NOte: This bug is regression on 4.5 as it occurs on drupal.sandbox.civicrm.org .
Works as expected on drupal.demo.civicrm.org

Steps to reproduce:
1. Advanced search for "employer of" and select one of the found organisations.
2.In Relationships tab click on name of employee to open in new tab

Result: the new tab display the organisation's record, not the individual's record.

This seems to happen for all b to a relationships (tested for volunteer is, parent of, household member is, head of household is)

Works as expected for a to b relationships