How do I restore the tab to Increase Indent Level in Keynote '13? As of Keynote '13 for Mavericks, it seems Apple disabled ⇥ Tab to increase indent level (and ⇧ Shift+⇥ Tab to decrease it).

Is there any way to re-enable this? I tried using the Keyboard Shortcuts control, but you cannot set ⇥ Tab as a keyboard shortcut (it instead just moves you to the next control).
After a great deal of testing, I have come to the conclusion that tab works to increase indent, but ONLY if your master slide is configured to have bullets. My solution (since I did not really want bullets on my slides) was to turn on bullets and set the color opacity to 0.