Disable undo/redo in view mode for reviewing.

word/Editor/Document.js

@@ -8303,6 +8303,13 @@ CDocument.prototype.Document_UpdateUndoRedoState = function()
 
 	// Проверяем состояние Undo/Redo
 
+	if (this.IsViewModeInReview())
+	{
+		this.Api.sync_CanUndoCallback(false);
+		this.Api.sync_CanRedoCallback(false);
+	}
+	else
+	{
 		var bCanUndo = this.History.Can_Undo();
 		if (true !== bCanUndo && this.Api && this.CollaborativeEditing && true === this.CollaborativeEditing.Is_Fast() && true !== this.CollaborativeEditing.Is_SingleUser())
 			bCanUndo = this.CollaborativeEditing.CanUndo();
@@ -8310,6 +8317,7 @@ CDocument.prototype.Document_UpdateUndoRedoState = function()
 		this.Api.sync_CanUndoCallback(bCanUndo);
 		this.Api.sync_CanRedoCallback(this.History.Can_Redo());
 		this.Api.CheckChangedDocument();
+	}
 };
 CDocument.prototype.Document_UpdateCopyCutState = function()
 {