I use Eclipse 3.4M4 together with subversive and Pydev 1.3.19 (+ extensions).
I edit a file which is in the svn repo. After saving the changes, I change to the team synchronize perspective. There, I click on the changed file and expect that I get a diff view. This works as expected if the editor with the changed file is closed.
If the editor is still open, I see both tabs (editor+diff), the diff tab is selected for a short period of time (<<1sec) and then the editor gets the focus. I can't even select the diff view by clicking on the tab manually.