If the current crumb doesn't have any children, do not show the arrow.

src/libtomahawk/widgets/siblingcrumbbutton.cpp

@@ -71,7 +71,8 @@ bool SiblingCrumbButton::isActive() const
 QSize SiblingCrumbButton::sizeHint() const
 {
     // our width = width of combo + 20px for right-arrow and spacing
-    return m_combo->sizeHint() + QSize(20,0);
+    const int padding = hasChildren() ? 20 : 5;
+    return m_combo->sizeHint() + QSize(padding,0);
 }
 
 void SiblingCrumbButton::paintEvent(QPaintEvent *event)
@@ -85,6 +86,9 @@ void SiblingCrumbButton::paintEvent(QPaintEvent *event)
 
     StyleHelper::horizontalHeader(&p, r); // draw the background
 
+    if( !hasChildren() )
+        return;
+
     bool reverse = opt.direction == Qt::RightToLeft;
     int menuButtonWidth = 12;
     int rightSpacing = 10;
@@ -147,3 +151,8 @@ void SiblingCrumbButton::activateSelf()
 {
     comboboxActivated(m_index.row());
 }
+
+bool SiblingCrumbButton::hasChildren() const
+{
+    return m_index.model()->hasChildren(m_index);
+}

src/libtomahawk/widgets/siblingcrumbbutton.h

@@ -71,6 +71,8 @@ private slots:
     void activateSelf();
 
 private:
+    bool hasChildren() const;
+
     QModelIndex m_index; /*!< our current index */
     ComboBox *m_combo; /*!< our combobox! */
 

src/libtomahawk/widgets/whatshotwidget.cpp

@@ -55,6 +55,8 @@ WhatsHotWidget::WhatsHotWidget( QWidget* parent )
     TomahawkUtils::unmarginLayout( layout() );
     TomahawkUtils::unmarginLayout( ui->verticalLayout->layout() );
     TomahawkUtils::unmarginLayout( ui->verticalLayout_2->layout() );
+    TomahawkUtils::unmarginLayout( ui->breadCrumbLeft->layout() );
+    TomahawkUtils::unmarginLayout( ui->breadCrumbRight->layout() );
 
 
     //set crumb widgets