From 92ee3ddbbbdb4f17f07ce3636bb54716dd43c3de Mon Sep 17 00:00:00 2001
From: Julia Radzhabova <julia.radzhabova@onlyoffice.com>
Date: Thu, 30 Jun 2022 15:57:33 +0300
Subject: [PATCH] Fix  Bug 57826

---
 apps/documenteditor/forms/app.js        | 2 ++
 apps/documenteditor/forms/app_dev.js    | 2 ++
 apps/documenteditor/main/app.js         | 2 ++
 apps/documenteditor/main/app_dev.js     | 2 ++
 apps/presentationeditor/main/app.js     | 2 ++
 apps/presentationeditor/main/app_dev.js | 2 ++
 apps/spreadsheeteditor/main/app.js      | 2 ++
 apps/spreadsheeteditor/main/app_dev.js  | 2 ++
 8 files changed, 16 insertions(+)

diff --git a/apps/documenteditor/forms/app.js b/apps/documenteditor/forms/app.js
index 9ec2b7522..99b5479f7 100644
--- a/apps/documenteditor/forms/app.js
+++ b/apps/documenteditor/forms/app.js
@@ -126,6 +126,8 @@ require([
     'gateway',
     'locale'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/documenteditor/forms/app_dev.js b/apps/documenteditor/forms/app_dev.js
index d0ff647a7..5511ef754 100644
--- a/apps/documenteditor/forms/app_dev.js
+++ b/apps/documenteditor/forms/app_dev.js
@@ -116,6 +116,8 @@ require([
     'sockjs',
     'underscore'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/documenteditor/main/app.js b/apps/documenteditor/main/app.js
index ee567e211..190281919 100644
--- a/apps/documenteditor/main/app.js
+++ b/apps/documenteditor/main/app.js
@@ -133,6 +133,8 @@ require([
     'gateway',
     'locale'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/documenteditor/main/app_dev.js b/apps/documenteditor/main/app_dev.js
index 990fa4823..242a4d947 100644
--- a/apps/documenteditor/main/app_dev.js
+++ b/apps/documenteditor/main/app_dev.js
@@ -123,6 +123,8 @@ require([
     'sockjs',
 	'underscore'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/presentationeditor/main/app.js b/apps/presentationeditor/main/app.js
index 089bd6906..b34a9cd72 100644
--- a/apps/presentationeditor/main/app.js
+++ b/apps/presentationeditor/main/app.js
@@ -132,6 +132,8 @@ require([
     'gateway',
     'locale'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/presentationeditor/main/app_dev.js b/apps/presentationeditor/main/app_dev.js
index 2cf067eaa..8d7c9c55e 100644
--- a/apps/presentationeditor/main/app_dev.js
+++ b/apps/presentationeditor/main/app_dev.js
@@ -123,6 +123,8 @@ require([
     'xregexp',
     'underscore'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/spreadsheeteditor/main/app.js b/apps/spreadsheeteditor/main/app.js
index 42fff9d89..74c701ad7 100644
--- a/apps/spreadsheeteditor/main/app.js
+++ b/apps/spreadsheeteditor/main/app.js
@@ -132,6 +132,8 @@ require([
     'gateway',
     'locale'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**
diff --git a/apps/spreadsheeteditor/main/app_dev.js b/apps/spreadsheeteditor/main/app_dev.js
index af9d5b6f7..ace713ac7 100644
--- a/apps/spreadsheeteditor/main/app_dev.js
+++ b/apps/spreadsheeteditor/main/app_dev.js
@@ -122,6 +122,8 @@ require([
 	'sockjs',
 	'underscore'
 ], function (Backbone, Bootstrap, Core) {
+    if (Backbone.History && Backbone.History.started)
+        return;
     Backbone.history.start();
 
     /**