This is a known concern within the Toad for Oracle developers. This has been discussed at length on the Toad Forum.
If one looks at this link from a Toad forum (again this was just one of many forum threads),
http://www.toadworld.com/products/toad-for-oracle/f/10/p/24879/55724#55724
One will also see a suggestion on a 'possible' way around for this.
However, it only works if they use tab stops.
It's not a full solution, but is possible it may work for some people, but maybe not others depending on coding styles.
I have been informed that Development is looking at trying to add the old feature back, but it's not as easy as it sounds with the Toad new editor component.