split_products_by_distributor was not written with pre-pagination by searcher in mind, resulting in silently dropped products. Disable pagination at searcher.

lib/open_food_web/searcher.rb

@@ -3,6 +3,14 @@ require 'spree/core/search/base'
 module OpenFoodWeb
   class Searcher < Spree::Core::Search::Base
 
+    # Do not perform pagination
+    def retrieve_products
+      @products_scope = get_base_scope
+      curr_page = page || 1
+
+      @products = @products_scope.includes([:master])
+    end
+
     def get_base_scope
       base_scope = super