Sync with Kendo UI Professional

Author: Kendo Bot

package.json

@@ -11,9 +11,9 @@
   "version": "1.0.0",
   "dependencies": {},
   "devDependencies": {
-    "@progress/kendo-theme-bootstrap": "4.30.0",
-    "@progress/kendo-theme-default": "4.32.0",
-    "@progress/kendo-theme-material": "3.28.0",
+    "@progress/kendo-theme-bootstrap": "4.31.0",
+    "@progress/kendo-theme-default": "4.33.0",
+    "@progress/kendo-theme-material": "3.29.0",
     "amd-optimize": "0.6.1",
     "autoprefixer": "^9.1.5",
     "bootstrap": "^4.0.0",

src/kendo.combobox.js

@@ -353,6 +353,7 @@ var __meta__ = { // jshint ignore:line
             if ((!that.listView.bound() && state !== STATE_FILTER) || state === STATE_ACCEPT) {
                 that._open = true;
                 that._state = STATE_REBIND;
+
                 if ((that.options.minLength !== 1 && !isFiltered) || (isFiltered && that.value() && that.selectedIndex === -1 )) {
                     that.refresh();
                     that._openPopup();
@@ -1119,7 +1120,8 @@ var __meta__ = { // jshint ignore:line
                 }
                 else if (value === "" && that._prev !== "" && that._prev !== undefined) {
                     that._clearValue();
-                    that.search("");
+                    that._open = true;
+                    that._state = STATE_REBIND;
                 }
 
                 that._typingTimeout = null;