There is a UI Error when sorting Synchronization Task executions. To reproduce:
1) "Edit" a Synchronization Task and click on the "Executions" tab.
2) Try to sort the executions differently by clicking on any of the table headers.
3) Note that the table appears to "jump up" in the screen.
4) Now click on another tab. The executions table appears appended to the page of the other tab.