RichTextArea and Tab Order

I am working on a mini mail client application and on my Compose Message screen I am using the RichTextArea component for the message body field.

The problem is that using Tab-based navigation when I am moving from the Subject field to the Body field (the body being below the subject like in all normal mail clients) the focus goes to the first button on the RichTextArea toolbar rather than the actual text area box which is a bit annoying since now I have to use the mouse to focus it on the text area which decreases usability.

Is anyone aware of a way to disable this tabbing behavior?

Nobody ran into this situation?