Only show unique bubble entries in each cluster

app/controllers/events_controller.rb

@@ -2,15 +2,21 @@ class EventsController < ApplicationController
   before_action :set_activity_day
 
   def index
-    @events = user_events.where(created_at: @activity_day.all_day).
-      group_by { |event| [ event.created_at.hour, helpers.event_column(event) ] }
-
+    @events = unique_events_by_hour_and_column
     @next_day = @activity_day.yesterday.strftime("%Y-%m-%d")
   end
 
   private
+    def unique_events_by_hour_and_column
+      events_by_hour_and_column.map { |hour_col, events| [ hour_col, events.uniq(&:bubble_id) ] }
+    end
+
+    def events_by_hour_and_column
+      user_events.group_by { |event| [ event.created_at.hour, helpers.event_column(event) ] }
+    end
+
     def user_events
-      Event.where(bubble: user_bubbles)
+      Event.where(bubble: user_bubbles).where(created_at: @activity_day.all_day)
     end
 
     def user_bubbles