add destroy hook to index controller

awx/ui/client/features/output/index.controller.js

@@ -838,6 +838,15 @@ function OutputIndexController (
 
         return last();
     });
+
+    $scope.$on('$destroy', () => {
+        stopListening();
+
+        render.clear();
+        render.el.remove();
+        slide.clear();
+        stream.bufferInit();
+    });
 }
 
 OutputIndexController.$inject = [

awx/ui/client/features/output/render.service.js

@@ -228,6 +228,10 @@ function JobRenderService ($q, $sce, $window) {
             html += row;
         }
 
+        if (this.records[event.uuid]) {
+            this.records[event.uuid].lineCount = count;
+        }
+
         return { html, count };
     };
 

awx/ui/client/features/output/slide.service.js

@@ -126,6 +126,13 @@ function SlidingWindowService ($q) {
         return frames.filter(({ counter }) => counter > tail);
     };
 
+    this.clear = () => {
+        this.buffer.events.length = 0;
+        this.buffer.min = 0;
+        this.buffer.max = 0;
+        this.buffer.count = 0;
+    };
+
     this.getFrames = () => $q.resolve(this.buffer.events);
 
     this.getMaxCounter = () => {