While specifying a bug summary, for instance: Stabilize media-libs/opencv-2.3.0 ..the list of bugs that come up do not contain anywhere near the accuracy or relevance than a regular "ALL Stabilize media-libs/opencv-2.3.0" returns. This seems to defeat the purpose of the search, if duplicate bugs (having duplicate or near-duplicate summaries) are not listed. Reproducible: Always
Created attachment 288911 [details] screenshot of regular search result this screenshot shows the result for doing a top-bar quick search of "Stabilize =media-libs/opencv-2.3.0"
Created attachment 288913 [details] screenshot of ajax-based search this screenshot shows the results from the ajax-based search when specifying the same string on the Summary line.
Could you reproduce it with the current Bugzilla version? The duplicate search is broken on my system, so I can't test.