Created attachment 569402 [details] missing_total_number_of_matching_results 1. Load https://addons-dev.allizom.org/en-US/firefox/search/?q=firebug&cat=all 2. Expand Categories and select Extensions 3. Contract the "Categories" filter. 4. From "Categories" select again "All Addons". Actual Results: The "matching results" under the left menu is missing. Expected Results: There should be "X matching results" under the Filter options.
I can't reproduce from these steps. Could you either show a screencast or different STR? Thanks.