Changing QWidget object scope changes the CSS

Question

Consider this two parts of code

1. NotifWidget* notifWidget_ = new NotifWidget(); notifWidget_->show(); notifWidget_->move(computePosition(notifWidget_));
2. notifWidget_->show(); notifWidget_->move(computePosition(notifWidget_));

In first case the NotifWidget (which is inherited from QFrame) the notifWidget_ object is local object and the corresponding widget is show like this

In the second case the notifWidget_ object is the class member and and here is the image for that case

Both widgets have same CSS style sheet and same objectName. Does anyone know what's the problem for the second case? Why in second case the inner widgets are overlapped?

update

including css(if any)

QWidget#NotifWidget_actions
{
    border:0px solid;
}
QWidget#AccessGiven, QWidget#AccessGiven[onhover="false"]
{
    background: white;
}
QWidget#AccessGiven[onhover="true"]
{
    background: #f2f2f2;
}

QLabel#AccessGiven_icon, QLabel#AccessGiven_message, QLabel#AccessGiven_icon[onhover="false"], QLabel#AccessGiven_message[onhover="false"]
{
    background: white;
    padding-bottom: 0px;
    qproperty-wordWrap: true;
    max-height: 48px;
    min-height: 48px;
}
QLabel#AccessGiven_message
{
    font: 12px;
    max-width: 200px;
    min-width: 200px;
}
QLabel#AccessGiven_icon
{
    max-width: 64px;
    min-width: 64px;
}
QLabel#AccessGiven_icon[onhover="true"], QLabel#AccessGiven_message[onhover="true"]
{
    background: #f2f2f2;
}

QPushButton#AccessGiven_action, QPushButton#AccessGiven_action[onhover="true"]
{
    font: 12px;
    color: rgba( 35, 35, 35, 0% );
    padding-bottom: 0px;
    background-color: rgba( 35, 35, 35, 0% );
    margin-left: 0px;
}
QPushButton#AccessGiven_action[onhover="true"]
{
    color: rgba( 35, 35, 35, 50% );
}

QPushButton#AccessGiven_action:hover
{
    background: rgba( 35, 35, 35, 20% );
}
QPushButton#AccessGiven_action:pressed
{
    background: rgba( 35, 35, 35, 10% );
    padding-bottom: 2px;
}
QPushButton#NotifWidget_settings
{
    background-image: url(./media/settings.png);
    height: 24px;
    width: 24px;
    background-repeat: no-repeat;
    background-position: center center;
    border: 0px;
}
QPushButton#NotifWidget_settings:hover
{ 
    background-color: lightgray;
}
QPushButton#NotifWidget_settings:pressed
{ 
background-color: silver;
}

QPushButton#NotifWidget_help
{
    background-image: url(./media/help.png);
    height: 24px;
    width: 24px;
    background-repeat: no-repeat;
    background-position: center center;
    border: 0px;
}
QPushButton#NotifWidget_help:hover
{ 
    background-color: lightgray;
}
QPushButton#NotifWidget_help:pressed
{ 
    background-color: silver;
}

QPushButton#NotifWidget_toWeb
{
    height: 24px;
    width: 24px;
    background-image: url(./media/web.png);
    background-repeat: no-repeat;
    background-position: center center;;
    border: 0px light ;
}
QPushButton#NotifWidget_toWeb:hover
{
    background-color: lightgray;
}
QPushButton#NotifWidget_toWeb:pressed
{
    background-color: silver;
}

QPushButton#NotifWidget_exit
{
    height: 14;
    padding:2px;
    margin-left:5px;
    background-color: rgb(255,0,0, 0%);
    border: 1px light ;
}
QPushButton#NotifWidget_exit:hover
{
    background-color: rgb(255,0,0, 25%);
}
QPushButton#NotifWidget_exit:pressed
{
    background-color: rgb(255,0,0, 35%);
}
QScrollArea#NotifWidget_scrollArea
{
/*    background: transparent;
    border: 0px solid;*/
}
QFrame#NotifWidget
{
    background-color: #F5F5F5;
    /*min-width: 345;
    max-width: 345;
    min-height: 400;*/
    border: 1px solid rgb(37, 76, 241);
}