Steps to Reproduce

- x
  - b
  - a
  - =sort
    - Alphabetical
      - Desc

1. Set the cursor on x.
2. Activate New Subthought Above (Meta + Shift + Enter).
3. Move cursor up/down.

Current Behavior

• Cursor up moves the cursor from the empty thought to a.
• Cursor down: Nothing happens.

Expected Behavior

• Cursor up should move the cursor from the empty thought to x.
• Cursor down should move the cursor from the empty thought to b.

Testing

Add an RTL test.

Notes

Empty thoughts are generally ignored in sorted lists. This is to avoid re-sorting the list when the user activates New Thought or New Subthought. It will only re-sort when the user starts typing in the thought.