[Major Annoying] Fix index position is reset in the list of Unstaged Files

I love the fact that I can navigate through the list of Unstaged Files with the arrow keys, and press Space bar to stage a file for commit. Extremely effective!

But everytime a file is commited with the Space bar the cursor/index position is reset to the first file in the list. The expected behavior is to move index position to the next file in the list.