Two layer sorting request

Hi Bullet development team,

I really like using your app.

One small feature I would like to suggest. I often sort my task by time. However, when I use this option, my items with unassigned time will be sorted by the they created. Can you add one more layer of sorting, so that after sorting by time for items with time assigned, I can sort remaining items by title?

Thank you a lot for your effort maintaining this app.