Moved cleanuo code to exit function in welcome.js

modules/ui/curtain.js

@@ -221,9 +221,6 @@ export function uiCurtain() {
         }
 
         curtain.cut(box, options.duration);
-        
-        //remove any leftover .counter elements 
-        tooltip.selectAll('.counter').remove();
 
         return tooltip;
     };

modules/ui/intro/welcome.js

@@ -137,7 +137,7 @@ export function uiIntroWelcome(context, reveal) {
         );
     }
 
-
+    
     chapter.enter = function() {
         welcome();
     };
@@ -145,6 +145,9 @@ export function uiIntroWelcome(context, reveal) {
 
     chapter.exit = function() {
         listener.off();
+        var tooltip = d3_select('.curtain-tooltip.intro-mouse')
+            .selectAll('.counter')
+            .remove();
     };