Fixes around render cache

core/menu_view.js

@@ -102,6 +102,8 @@ MenuView.prototype.setItems = function(items) {
         if(this.complexItems) {
             this.itemFormat = this.itemFormat || '{text}';
         }
+
+        this.invalidateRenderCache();
     }
 };
 
@@ -110,11 +112,19 @@ MenuView.prototype.getRenderCacheItem = function(index, focusItem = false) {
     return item && item[focusItem ? 'focus' : 'standard'];
 };
 
+MenuView.prototype.removeRenderCacheItem = function(index) {
+    delete this.renderCache[index];
+};
+
 MenuView.prototype.setRenderCacheItem = function(index, rendered, focusItem = false) {
     this.renderCache[index] = this.renderCache[index] || {};
     this.renderCache[index][focusItem ? 'focus' : 'standard'] = rendered;
 };
 
+MenuView.prototype.invalidateRenderCache = function() {
+    this.renderCache = {};
+};
+
 MenuView.prototype.setSort = function(sort) {
     if(this.sorted || !Array.isArray(this.items) || 0 === this.items.length) {
         return;
@@ -152,6 +162,8 @@ MenuView.prototype.removeItem = function(index) {
         this.focusedItemIndex = Math.max(this.focusedItemIndex - 1, 0);
     }
 
+    this.removeRenderCacheItem(index);
+
     this.positionCacheExpired = true;
 };