Sorry for the title, my bad English. Maybe not a bug, but an annoyance.
Step 1: Having two Publisher documents open (in tabs). In Tab 1 there is a placed e.g. an EPS.
Step 2: Edit the EPS on Tab 1. Another tab is opened right to Tab 2. Make your changes and close the (edit) tab.
Result: Instead of returning to Tab 1 where the EPS is placed, Tab 2 is shown.