In clubs/clubs.tt, the .club_hold_search click handler uses e.preventDefault instead of e.preventDefault(). This was probably a typo or similar in Bug 24393. This references the method without calling it, so the default anchor action is never prevented. Since the element is an <a href="#">, clicking "Search to hold" causes the page to scroll to the top.
Created attachment 194689 [details] [review] Bug 42012: Fix missing preventDefault() call in clubs.tt - e.preventDefault was missing parentheses, so the default action was never actually prevented - The element is an <a href="#"> link, so clicking it would cause the page to scroll to top