diff --git a/apps/common/mobile/lib/controller/Plugins.jsx b/apps/common/mobile/lib/controller/Plugins.jsx
index 5ec997299..8c7d5394f 100644
--- a/apps/common/mobile/lib/controller/Plugins.jsx
+++ b/apps/common/mobile/lib/controller/Plugins.jsx
@@ -214,40 +214,7 @@ const PluginsController = inject('storeAppOptions')(observer(props => {
 
         plugins.forEach(item => {
             let plugin = new Asc.CPlugin();
-
-            plugin.set_Name(item['name']);
-            plugin.set_Guid(item['guid']);
-            plugin.set_BaseUrl(item['baseUrl']);
-            plugin.set_MinVersion && plugin.set_MinVersion(item['minVersion']);
-
-            let variations = item['variations'],
-                variationsArr = [];
-
-            variations.forEach(itemVar => {
-                let variation = new Asc.CPluginVariation();
-
-                variation.set_Description(itemVar['description']);
-                variation.set_Url(itemVar['url']);
-                variation.set_Icons(itemVar['icons']);
-                variation.set_Visual(itemVar['isVisual']);
-                variation.set_CustomWindow(itemVar['isCustomWindow']);
-                variation.set_System(itemVar['isSystem']);
-                variation.set_Viewer(itemVar['isViewer']);
-                variation.set_EditorsSupport(itemVar['EditorsSupport']);
-                variation.set_Modal(itemVar['isModal']);
-                variation.set_InsideMode(itemVar['isInsideMode']);
-                variation.set_InitDataType(itemVar['initDataType']);
-                variation.set_InitData(itemVar['initData']);
-                variation.set_UpdateOleOnResize(itemVar['isUpdateOleOnResize']);
-                variation.set_Buttons(itemVar['buttons']);
-                variation.set_Size(itemVar['size']);
-                variation.set_InitOnSelectionChanged(itemVar['initOnSelectionChanged']);
-                variation.set_Events(itemVar['events']);
-
-                variationsArr.push(variation);
-            });
-
-            plugin["set_Variations"](variationsArr);
+            plugin.deserialize(item);
             arr.push(plugin);
         });
 
diff --git a/apps/documenteditor/main/app/controller/RightMenu.js b/apps/documenteditor/main/app/controller/RightMenu.js
index 01f508e3e..1885894af 100644
--- a/apps/documenteditor/main/app/controller/RightMenu.js
+++ b/apps/documenteditor/main/app/controller/RightMenu.js
@@ -131,8 +131,8 @@ define([
             this.rightmenu.fireEvent('editcomplete', this.rightmenu);
         },
 
-        onFocusObject: function(SelectedObjects) {
-            if (!this.editMode)
+        onFocusObject: function(SelectedObjects, forceSignature) {
+            if (!this.editMode && !forceSignature)
                 return;
 
             var open = this._initSettings ? !Common.localStorage.getBool("de-hide-right-settings", this.rightmenu.defaultHideRightMenu) : false;
@@ -269,6 +269,7 @@ define([
                 if (priorityactive>-1) active = priorityactive;
                 else if (lastactive>=0 && currentactive<0) active = lastactive;
                 else if (currentactive>=0) active = currentactive;
+                else if (forceSignature && !this._settings[Common.Utils.documentSettingsType.Signature].hidden) active = Common.Utils.documentSettingsType.Signature;
                 else if (!this._settings[Common.Utils.documentSettingsType.MailMerge].hidden) active = Common.Utils.documentSettingsType.MailMerge;
 
                 if (active == undefined && open && lastactive>=0)
@@ -423,8 +424,9 @@ define([
                 }
                 this.rightmenu.chartSettings.disableControls(disabled);
 
-                if (!allowSignature && this.rightmenu.signatureSettings) {
-                    this.rightmenu.btnSignature.setDisabled(disabled);
+                if (this.rightmenu.signatureSettings) {
+                    !allowSignature && this.rightmenu.btnSignature.setDisabled(disabled);
+                    allowSignature && disabled && this.onFocusObject([], true); // force press signature button
                 }
 
                 if (disabled) {
diff --git a/apps/documenteditor/main/app/controller/Toolbar.js b/apps/documenteditor/main/app/controller/Toolbar.js
index e3b20bdfd..8b7114bd4 100644
--- a/apps/documenteditor/main/app/controller/Toolbar.js
+++ b/apps/documenteditor/main/app/controller/Toolbar.js
@@ -1627,6 +1627,8 @@ define([
 
         insertImage: function(data) { // gateway
             if (data && (data.url || data.images)) {
+                data.url && console.log("Obsolete: The 'url' parameter of the 'insertImage' method is deprecated. Please use 'images' parameter instead.");
+
                 var arr = [];
                 if (data.images && data.images.length>0) {
                     for (var i=0; i<data.images.length; i++) {
diff --git a/apps/documenteditor/main/app/view/SignatureSettings.js b/apps/documenteditor/main/app/view/SignatureSettings.js
index c489c8e13..8b087ba4e 100644
--- a/apps/documenteditor/main/app/view/SignatureSettings.js
+++ b/apps/documenteditor/main/app/view/SignatureSettings.js
@@ -400,7 +400,7 @@ define([
                     allowMerge: false,
                     allowSignature: true,
                     allowProtect: true,
-                    rightMenu: {clear: disable && (DE.getController('RightMenu').rightmenu.GetActivePane() !== 'id-signature-settings'), disable: true},
+                    rightMenu: {clear: false, disable: true},
                     statusBar: true,
                     leftMenu: {disable: false, previewMode: true},
                     fileMenu: false,
diff --git a/apps/presentationeditor/main/app/controller/RightMenu.js b/apps/presentationeditor/main/app/controller/RightMenu.js
index c6f83d14a..8d6791d91 100644
--- a/apps/presentationeditor/main/app/controller/RightMenu.js
+++ b/apps/presentationeditor/main/app/controller/RightMenu.js
@@ -106,8 +106,8 @@ define([
             this.rightmenu.fireEvent('editcomplete', this.rightmenu);
         },
 
-        onFocusObject: function(SelectedObjects) {
-            if (!this.editMode)
+        onFocusObject: function(SelectedObjects, forceSignature) {
+            if (!this.editMode && !forceSignature)
                 return;
 
             var open = this._initSettings ? !Common.localStorage.getBool("pe-hide-right-settings", this.rightmenu.defaultHideRightMenu) : false;
@@ -194,6 +194,7 @@ define([
                 if (priorityactive>-1) active = priorityactive;
                 else if (currentactive>=0) active = currentactive;
                 else if (lastactive>=0) active = lastactive;
+                else if (forceSignature && !this._settings[Common.Utils.documentSettingsType.Signature].hidden) active = Common.Utils.documentSettingsType.Signature;
                 else active = Common.Utils.documentSettingsType.Slide;
 
                 if (active !== undefined) {
@@ -226,8 +227,9 @@ define([
                 this.rightmenu.imageSettings.disableControls(disabled);
                 this.rightmenu.chartSettings.disableControls(disabled);
 
-                if (!allowSignature && this.rightmenu.signatureSettings) {
-                    this.rightmenu.btnSignature.setDisabled(disabled);
+                if (this.rightmenu.signatureSettings) {
+                    !allowSignature && this.rightmenu.btnSignature.setDisabled(disabled);
+                    allowSignature && disabled && this.onFocusObject([], true); // force press signature button
                 }
 
                 if (disabled) {
diff --git a/apps/presentationeditor/main/app/controller/Toolbar.js b/apps/presentationeditor/main/app/controller/Toolbar.js
index cfea951bc..c2e3935db 100644
--- a/apps/presentationeditor/main/app/controller/Toolbar.js
+++ b/apps/presentationeditor/main/app/controller/Toolbar.js
@@ -1627,6 +1627,8 @@ define([
 
         insertImage: function(data) { // gateway
             if (data && (data.url || data.images)) {
+                data.url && console.log("Obsolete: The 'url' parameter of the 'insertImage' method is deprecated. Please use 'images' parameter instead.");
+
                 var arr = [];
                 if (data.images && data.images.length>0) {
                     for (var i=0; i<data.images.length; i++) {
diff --git a/apps/presentationeditor/main/app/view/SignatureSettings.js b/apps/presentationeditor/main/app/view/SignatureSettings.js
index c92af3468..2360de436 100644
--- a/apps/presentationeditor/main/app/view/SignatureSettings.js
+++ b/apps/presentationeditor/main/app/view/SignatureSettings.js
@@ -350,7 +350,7 @@ define([
                 Common.NotificationCenter.trigger('editing:disable', disable, {
                     viewMode: disable,
                     allowSignature: true,
-                    rightMenu: {clear: disable && (PE.getController('RightMenu').rightmenu.GetActivePane() !== 'id-signature-settings'), disable: true},
+                    rightMenu: {clear: false, disable: true},
                     statusBar: true,
                     leftMenu: {disable: false, previewMode: true},
                     fileMenu: false,
diff --git a/apps/spreadsheeteditor/main/app/controller/RightMenu.js b/apps/spreadsheeteditor/main/app/controller/RightMenu.js
index be2acfa89..00bcf8923 100644
--- a/apps/spreadsheeteditor/main/app/controller/RightMenu.js
+++ b/apps/spreadsheeteditor/main/app/controller/RightMenu.js
@@ -168,14 +168,14 @@ define([
             this.onFocusObject(SelectedObjects, cellInfo, formatTableInfo, sparkLineInfo, pivotInfo);
         },
 
-        onFocusObject: function(SelectedObjects, cellInfo, formatTableInfo, sparkLineInfo, pivotInfo) {
-            if (!this.editMode)
+        onFocusObject: function(SelectedObjects, cellInfo, formatTableInfo, sparkLineInfo, pivotInfo, forceSignature) {
+            if (!this.editMode && !forceSignature)
                 return;
 
-            var isCellLocked = cellInfo.asc_getLocked() || this._state.wsProps['FormatCells'],
-                isTableLocked = (cellInfo.asc_getLockedTable()===true || !this.rightmenu.mode.canModifyFilter) || this._state.wsProps['FormatCells'],
-                isSparkLocked = (cellInfo.asc_getLockedSparkline()===true) || this._state.wsLock,
-                isPivotLocked = (cellInfo.asc_getLockedPivotTable()===true) || this._state.wsProps['PivotTables'];
+            var isCellLocked = cellInfo && cellInfo.asc_getLocked() || this._state.wsProps['FormatCells'],
+                isTableLocked = (cellInfo && cellInfo.asc_getLockedTable()===true || !this.rightmenu.mode.canModifyFilter) || this._state.wsProps['FormatCells'],
+                isSparkLocked = (cellInfo && cellInfo.asc_getLockedSparkline()===true) || this._state.wsLock,
+                isPivotLocked = (cellInfo && cellInfo.asc_getLockedPivotTable()===true) || this._state.wsProps['PivotTables'];
 
             for (var i=0; i<this._settings.length; ++i) {
                 if (i==Common.Utils.documentSettingsType.Signature) continue;
@@ -241,7 +241,7 @@ define([
                 this._settings[settingsType].hidden = 0;
             }
 
-            if (SelectedObjects.length<=0) { // cell is selected
+            if (SelectedObjects.length<=0 && cellInfo) { // cell is selected
                 settingsType = Common.Utils.documentSettingsType.Cell;
                 this._settings[settingsType].props = cellInfo;
                 this._settings[settingsType].locked = isCellLocked;
@@ -296,6 +296,7 @@ define([
                 if (priorityactive>-1) active = priorityactive;
                 else if (lastactive>=0 && currentactive<0) active = lastactive;
                 else if (currentactive>=0) active = currentactive;
+                else if (forceSignature && !this._settings[Common.Utils.documentSettingsType.Signature].hidden) active = Common.Utils.documentSettingsType.Signature;
 
                 if (active == undefined && this._openRightMenu && lastactive>=0)
                     active = lastactive;
@@ -425,12 +426,9 @@ define([
                 this.rightmenu.cellSettings.disableControls(disabled);
                 this.rightmenu.slicerSettings.disableControls(disabled);
 
-                if (!allowSignature && this.rightmenu.signatureSettings) {
-                    this.rightmenu.btnSignature.setDisabled(disabled);
-                }
-
-                if (!allowSignature && this.rightmenu.signatureSettings) {
-                    this.rightmenu.btnSignature.setDisabled(disabled);
+                if (this.rightmenu.signatureSettings) {
+                    !allowSignature && this.rightmenu.btnSignature.setDisabled(disabled);
+                    allowSignature && disabled && this.onFocusObject([], undefined, undefined, undefined, undefined, true); // force press signature button
                 }
 
                 if (disabled) {
diff --git a/apps/spreadsheeteditor/main/app/controller/Toolbar.js b/apps/spreadsheeteditor/main/app/controller/Toolbar.js
index 993366fde..e045f7e44 100644
--- a/apps/spreadsheeteditor/main/app/controller/Toolbar.js
+++ b/apps/spreadsheeteditor/main/app/controller/Toolbar.js
@@ -908,6 +908,8 @@ define([
 
         insertImage: function(data) { // gateway
             if (data && (data.url || data.images)) {
+                data.url && console.log("Obsolete: The 'url' parameter of the 'insertImage' method is deprecated. Please use 'images' parameter instead.");
+
                 var arr = [];
                 if (data.images && data.images.length>0) {
                     for (var i=0; i<data.images.length; i++) {
diff --git a/apps/spreadsheeteditor/main/app/controller/WBProtection.js b/apps/spreadsheeteditor/main/app/controller/WBProtection.js
index 53ae60bd0..9590cbc02 100644
--- a/apps/spreadsheeteditor/main/app/controller/WBProtection.js
+++ b/apps/spreadsheeteditor/main/app/controller/WBProtection.js
@@ -76,7 +76,6 @@ define([
             });
 
             Common.NotificationCenter.on('app:ready', this.onAppReady.bind(this));
-            Common.NotificationCenter.on('api:disconnect', _.bind(this.onCoAuthoringDisconnect, this));
             Common.NotificationCenter.on('protect:sheet', _.bind(this.onSheetClick, this));
         },
         setConfig: function (data, api) {
@@ -93,7 +92,6 @@ define([
                 this.api.asc_registerCallback('asc_onChangeProtectWorksheet',_.bind(this.onChangeProtectSheet, this));
                 this.api.asc_registerCallback('asc_onActiveSheetChanged',   _.bind(this.onActiveSheetChanged, this));
                 this.api.asc_registerCallback('asc_onSelectionChanged',     _.bind(this.onApiSelectionChanged, this));
-                this.api.asc_registerCallback('asc_onCoAuthoringDisconnect',_.bind(this.onCoAuthoringDisconnect, this));
             }
         },
 
@@ -352,10 +350,6 @@ define([
                     }
                 }
             }
-        },
-
-        onCoAuthoringDisconnect: function() {
-            this.SetDisabled(true);
         }
 
     }, SSE.Controllers.WBProtection || {}));
diff --git a/apps/spreadsheeteditor/main/app/view/SignatureSettings.js b/apps/spreadsheeteditor/main/app/view/SignatureSettings.js
index 53836c5ac..e80268fee 100644
--- a/apps/spreadsheeteditor/main/app/view/SignatureSettings.js
+++ b/apps/spreadsheeteditor/main/app/view/SignatureSettings.js
@@ -397,7 +397,7 @@ define([
                     viewMode: disable,
                     allowSignature: true,
                     allowProtect: true,
-                    rightMenu: {clear: disable && (SSE.getController('RightMenu').rightmenu.GetActivePane() !== 'id-signature-settings'), disable: true},
+                    rightMenu: {clear: false, disable: true},
                     statusBar: true,
                     leftMenu: {disable: false, previewMode: true},
                     fileMenu: false,