It's by design. Anki by default anchors to the answer when you flip the card, because that's usually what you are interested in once you've flipped it. The desktop client does the same thing (try making the window really small, for example).
If you want to remove that behaviour, remove the item in your template that has the id "answer". Usually this is a <hr id=answer>. If you like having the line, just rename the id.
If you want to remove that behaviour, remove the item in your template that has the id "answer". Usually this is a <hr id=answer>. If you like having the line, just rename the id.