When I want to post a new topic, I have type the topic title in the Ask field, which instantly causes an autocomplete-style search for related topics to happen, which is visually annoying, especially if I'm fairly sure this is a new unique topic that I actually want to post.
Furthermore, if I try to press Enter to submit the title, the forum instead takes me to the first autocomplete result (even though it's in no way highlighted or focused. Instead, I have to click on the Ask button.
While I understand that the search thing isn't going away, it would be nice if we could at least press Enter to start a new topic, after typing in the title.