SSDT Re-alter Trigger when nothing has changed

Question

I'm using SSDT database project to create deployment scripts for my database. One of the trigger, [trddl_GrantUserRights] is re-alter every time when the deployment runs. Nothing has changed in the definition of the trigger in the project files. Definition of the trigger:

ALTER trigger [trddl_GrantUserRights] ON DATABASE 
WITH EXECUTE AS 'dbo'

FOR DDL_DATABASE_LEVEL_EVENTS 

AS 

BEGIN


SET NOCOUNT ON;

    DECLARE @Cmd varchar(250)           

    /* InterfaceDeveloperUsers ve InterfaceDeveloperUsers rolleri db_datareader ve db_datawriter rollerini kapsadığından bu bölüme gerek kalmamıştır.

    IF  EVENTDATA().value('(/EVENT_INSTANCE/EventType)[1]','nvarchar(100)')='CREATE_TABLE' 
        OR EVENTDATA().value('(/EVENT_INSTANCE/EventType)[1]','nvarchar(100)')='CREATE_VIEW'
    BEGIN

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceAnalistUsers' AND type = 'R')  
        BEGIN
            SET @Cmd = 'GRANT SELECT,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceAnalistUsers]'
            EXEC (@Cmd)
        END

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceDeveloperUsers' AND type = 'R')  
        BEGIN
            SET @Cmd = 'GRANT SELECT,UPDATE,DELETE,INSERT,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceDeveloperUsers]'
            EXEC (@Cmd)
        END
    END
    */

    IF  EVENTDATA().value('(/EVENT_INSTANCE/EventType)[1]','nvarchar(100)')='CREATE_PROCEDURE'
    BEGIN

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceAnalistUsers' AND type = 'R')  
        BEGIN
            SET @Cmd = 'GRANT VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceAnalistUsers]'
            EXEC (@Cmd)
        END

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceDeveloperUsers' AND type = 'R')  
        BEGIN
            SET @Cmd = 'GRANT EXECUTE,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceDeveloperUsers]'
            EXEC (@Cmd)
        END

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'PusulaUser' AND type = 'S')  
        BEGIN
            SET @Cmd = 'GRANT EXECUTE ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [PusulaUser]'
            EXEC (@Cmd)
        END
    END


    IF  EVENTDATA().value('(/EVENT_INSTANCE/EventType)[1]','nvarchar(100)')='CREATE_FUNCTION'

    BEGIN

        IF  EVENTDATA().value('(/EVENT_INSTANCE/ObjectType)[1]','nvarchar(100)')='TF'
        BEGIN
            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceAnalistUsers' AND type = 'R')  
            BEGIN
                SET @Cmd = 'GRANT SELECT,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceAnalistUsers]'
                EXEC (@Cmd)
            END

            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceDeveloperUsers' AND type = 'R')  
            BEGIN
                SET @Cmd = 'GRANT SELECT,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceDeveloperUsers]'
                EXEC (@Cmd)
            END

            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'PusulaUser' AND type = 'S')  
            BEGIN
                SET @Cmd = 'GRANT SELECT ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [PusulaUser]'
                EXEC (@Cmd)
            END
        END             

        IF  EVENTDATA().value('(/EVENT_INSTANCE/ObjectType)[1]','nvarchar(100)')='FN'
        BEGIN
            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceAnalistUsers' AND type = 'R')  
            BEGIN
                SET @Cmd = 'GRANT VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceAnalistUsers]'
                EXEC (@Cmd)
            END

            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceDeveloperUsers' AND type = 'R')  
            BEGIN
                SET @Cmd = 'GRANT EXECUTE,VIEW DEFINITION ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [InterfaceDeveloperUsers]'
                EXEC (@Cmd)
            END

            IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'PusulaUser' AND type = 'S')  
            BEGIN
                SET @Cmd = 'GRANT EXECUTE ON  [' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + '].[' + EVENTDATA().value('(/EVENT_INSTANCE/ObjectName)[1]','nvarchar(100)') + '] TO [PusulaUser]'
                EXEC (@Cmd)
            END
        END

    END

    IF  EVENTDATA().value('(/EVENT_INSTANCE/EventType)[1]','nvarchar(100)')='CREATE_SCHEMA'

    BEGIN

        IF  EXISTS (SELECT * FROM sys.database_principals WHERE name = N'InterfaceDeveloperUsers' AND type = 'R')  
        BEGIN
            SET @Cmd = 'GRANT ALTER ON SCHEMA::' + EVENTDATA().value('(/EVENT_INSTANCE/SchemaName)[1]','nvarchar(100)') + ' TO [InterfaceDeveloperUsers]'
            EXEC (@Cmd)
        END

    END 

END;