WHen you execute list of commands, on botton window you can see messages, errors etc.
When you click on that information cursor should focus on the beginning of statement.
So it works for one line statements, wen you have large statements cursor not always is focused where expected.
Try this example:
In bottom window you will have 5 ORA-00942 errors.
Click on them and watch where cursor is focused.
I know that is small encumbrance but i often execute very large group of statements, and if cursor would be focused corectly,searching for errors would be more efficient