When you type for example 'zombie' in the so called search bar all it does is bring up random threads and mostly maybe 3 out of 10 thread headline included the word you're trying to search.
I'd think this causes a massive flow of duplicate reports about the same issues (at least for the few people that try searching before posting). So why not edit the search tool so that it would find EVERY title including that word and place all of them on top of the column? That way it would be easier and quicker to post / not post something about something...
And the search option should be available for all the issue fields (unassigned, recently modified and resolved) at once so you don't have to clip through them one by one in order to avoid duplicate reports.