When adding a new caption, focus jumps back to first line.
Focus should stay on new blank caption to avoid unnecessary scrolling.
LEONARD GOULD commented
Editing functions within the Captions window are difficult and unintuitive. When editing text, the cursor should be constrained to the specific caption we're working on. EXAMPLE: Now, if I press the "END" or "HOME" key it goes to the top or bottom of the entire group of captions which is devastating (there is a search function but it's still unnecessary delay). It should go to the top or bottom of the CAPTION. Now the only way to navigate within a caption is the arrow keys. Again very unfriendly and too many delays.