diff --git a/demo/js/config/demo.pane.js b/demo/js/config/demo.pane.js
index 30b2415a7..e6cb35c62 100644
--- a/demo/js/config/demo.pane.js
+++ b/demo/js/config/demo.pane.js
@@ -4,11 +4,15 @@
  * description:
  */
 !(function () {
-    var Pane = BI.inherit(BI.LoadingPane, {
+    var Pane = BI.inherit(BI.Pane, {
         props: {
 
         },
 
+        mounted: function () {
+            console.log('loading pane mounted');
+        },
+
         render: function () {
             return {
                 type: "bi.center_adapt",
@@ -19,11 +23,14 @@
             };
         },
 
-        beforeInit: function (callback) {
+        beforeRender: function (callback) {
+            var self = this;
+            this.loading();
             setTimeout(function () {
+                self.loaded();
                 callback();
             }, 3000);
         }
     });
     BI.shortcut("demo.pane", Pane);
-})();
\ No newline at end of file
+})();
diff --git a/dist/fix/fix.compact.js b/dist/fix/fix.compact.js
index fc7d7dfff..69a0a3196 100644
--- a/dist/fix/fix.compact.js
+++ b/dist/fix/fix.compact.js
@@ -183,7 +183,7 @@
         delete this.__cacheStore;
     };
 
-    _.each(["_afterRender", "_mount", "__afterMount"], function (name) {
+    _.each(["__afterRender", "_mount", "__afterMount"], function (name) {
         var old = BI.Widget.prototype[name];
         old && (BI.Widget.prototype[name] = function () {
             this.store && pushTarget(this.store);
diff --git a/karma.conf.js b/karma.conf.js
index 8b5bca997..1152ccb6a 100644
--- a/karma.conf.js
+++ b/karma.conf.js
@@ -35,7 +35,6 @@ module.exports = function (config) {
 
         exclude: [
             "src/base/single/input/file.js",
-            "src/case/loading/loading_pane.js",
             "src/case/ztree/**/*.js",
             "src/widget/multitree/**/*.js",
             "src/widget/multiselecttree/**/*.js",
diff --git a/src/case/combo/editoriconcheckcombo/combo.editiconcheck.js b/src/case/combo/editoriconcheckcombo/combo.editiconcheck.js
index 8ab27cf1a..28c57a2e9 100644
--- a/src/case/combo/editoriconcheckcombo/combo.editiconcheck.js
+++ b/src/case/combo/editoriconcheckcombo/combo.editiconcheck.js
@@ -64,6 +64,7 @@ BI.EditorIconCheckCombo = BI.inherit(BI.Widget, {
         this.editorIconCheckCombo = BI.createWidget({
             type: "bi.combo",
             container: o.container,
+            direction: o.direction,
             element: this,
             adjustLength: 2,
             el: this.trigger,
diff --git a/src/case/combo/icontextvaluecombo/combo.icontextvalue.js b/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
index d114dddee..118138779 100644
--- a/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
+++ b/src/case/combo/icontextvaluecombo/combo.icontextvalue.js
@@ -52,6 +52,7 @@ BI.IconTextValueCombo = BI.inherit(BI.Widget, {
             type: "bi.combo",
             element: this,
             container: o.container,
+            direction: o.direction,
             adjustLength: 2,
             el: this.trigger,
             popup: {
diff --git a/src/case/combo/textvaluecheckcombo/combo.textvaluecheck.js b/src/case/combo/textvaluecheckcombo/combo.textvaluecheck.js
index 996e7adf6..530cc2a01 100644
--- a/src/case/combo/textvaluecheckcombo/combo.textvaluecheck.js
+++ b/src/case/combo/textvaluecheckcombo/combo.textvaluecheck.js
@@ -44,6 +44,7 @@ BI.TextValueCheckCombo = BI.inherit(BI.Widget, {
         this.textIconCheckCombo = BI.createWidget({
             type: "bi.combo",
             container: o.container,
+            direction: o.direction,
             element: this,
             adjustLength: 2,
             el: this.trigger,
@@ -82,4 +83,4 @@ BI.TextValueCheckCombo = BI.inherit(BI.Widget, {
     }
 });
 BI.TextValueCheckCombo.EVENT_CHANGE = "EVENT_CHANGE";
-BI.shortcut("bi.text_value_check_combo", BI.TextValueCheckCombo);
\ No newline at end of file
+BI.shortcut("bi.text_value_check_combo", BI.TextValueCheckCombo);
diff --git a/src/case/combo/textvaluecombo/combo.textvalue.js b/src/case/combo/textvaluecombo/combo.textvalue.js
index b0ff081b7..b0242a64d 100644
--- a/src/case/combo/textvaluecombo/combo.textvalue.js
+++ b/src/case/combo/textvaluecombo/combo.textvalue.js
@@ -46,6 +46,7 @@ BI.TextValueCombo = BI.inherit(BI.Widget, {
         this.textIconCombo = BI.createWidget({
             type: "bi.combo",
             container: o.container,
+            direction: o.direction,
             element: this,
             adjustLength: 2,
             el: this.trigger,
diff --git a/src/case/loading/loading_pane.js b/src/case/loading/loading_pane.js
deleted file mode 100644
index 2218685c5..000000000
--- a/src/case/loading/loading_pane.js
+++ /dev/null
@@ -1,31 +0,0 @@
-/**
- * author: young
- * createdDate: 2018/12/18
- * description:
- */
-BI.LoadingPane = BI.inherit(BI.Pane, {
-    _mount: function () {
-        var isMounted = BI.Pane.superclass._mount.apply(this, arguments);
-        if (isMounted) {
-            if (this.beforeInit) {
-                this.__asking = true;
-                this.loading();
-                this.beforeInit(BI.bind(this.__loaded, this));
-            }
-        }
-    },
-
-    _initRender: function () {
-        if (this.beforeInit) {
-            this.__async = true;
-        } else {
-            this._render();
-        }
-    },
-
-    __loaded: function () {
-        this.__asking = false;
-        this.loaded();
-        this._render();
-    }
-});
\ No newline at end of file
diff --git a/src/core/4.widget.js b/src/core/4.widget.js
index 94a2fe6e8..f9f18c253 100644
--- a/src/core/4.widget.js
+++ b/src/core/4.widget.js
@@ -128,7 +128,7 @@
                     }
                     renderCallbackCalled = true;
                     self._render();
-                    self._afterRender();
+                    self.__afterRender();
                     self.__async = false;
                 }
 
@@ -137,7 +137,7 @@
                     (self.options.beforeRender || self.beforeRender).call(self, render);
                 } else {
                     self._render();
-                    self._afterRender();
+                    self.__afterRender();
                 }
             }
 
@@ -149,7 +149,7 @@
             }
         },
 
-        _afterRender: function () {
+        __afterRender: function () {
             pushTarget(this);
             this.__async === true && this._isMounted && callLifeHook(this, "beforeMount");
             this._mount();
diff --git a/typescript/case/loading/loading_pane.ts b/typescript/case/loading/loading_pane.ts
deleted file mode 100644
index 362c8f1b4..000000000
--- a/typescript/case/loading/loading_pane.ts
+++ /dev/null
@@ -1,5 +0,0 @@
-import { Pane } from "../../base/pane";
-
-export declare class LoadingPane extends Pane {
-    __loaded: (...args: any[]) => void;
-}
diff --git a/typescript/index.ts b/typescript/index.ts
index fdbae2aa0..6e6131a7d 100644
--- a/typescript/index.ts
+++ b/typescript/index.ts
@@ -24,7 +24,6 @@ import { SmallTextValueCombo } from './case/combo/combo.textvaluesmall';
 import { SearchTextValueCombo } from "./case/combo/searchtextvaluecombo/combo.searchtextvalue";
 import { SignEditor } from "./case/editor/editor.sign";
 import { StateEditor } from './case/editor/editor.state';
-import { LoadingPane } from "./case/loading/loading_pane";
 import { AllValueMultiTextValueCombo } from "./component/allvaluemultitextvaluecombo/allvalue.multitextvalue.combo";
 import { AbstractTreeValueChooser } from "./component/treevaluechooser/abstract.treevaluechooser";
 import { AbstractListTreeValueChooser } from "./component/treevaluechooser/abstract.treevaluechooser.list";
@@ -205,7 +204,6 @@ export interface BI extends _func, _i18n, _base, _inject, _var, _web, _utils {
     HighlightBehavior: typeof HighlightBehavior;
     RedMarkBehavior: typeof RedMarkBehavior;
     Pane: typeof Pane;
-    LoadingPane: typeof LoadingPane;
     Tab: typeof Tab;
     ButtonGroup: typeof ButtonGroup;
     Combo: typeof Combo;
@@ -411,7 +409,6 @@ export {
     BehaviorFactory,
     RedMarkBehavior,
     HighlightBehavior,
-    LoadingPane,
     Searcher,
     AbstractLabel,
     Label,
diff --git a/typescript/shims-tsx.ts b/typescript/shims-tsx.ts
index fcafdf807..aa76c2e9d 100644
--- a/typescript/shims-tsx.ts
+++ b/typescript/shims-tsx.ts
@@ -19,6 +19,8 @@ interface UIProps {
 interface AdditionalProps {
     column: number;
     row: number;
+    innerVGap: number;
+    innerHGap: number;
 }
 
 interface ElementClassProps<T> extends UIProps {