When answering a question that already has answers, the other answers are between the question and the answer box. This can be annoying when you want to refer back to the question as you formulate your answer.
I am not sure what would be a good way to fix this. The obvious solution of moving the answer box above the existing answers has the major drawback of discouraging users from reading the existing answers before they post their own. I also thought of collapsing the previous answers once you start writing an answer, but I have recently discarded a written up answer after deciding it was basically the same as an existing answer (though I thought before writing that it would be different), so seeing the existing answers even as you write your own can be useful. Moving elements around when the user starts writing an answer could be annoying, but perhaps something could be made to work?