diff --git a/src/declarativeimports/plasmacomponents3/ComboBox.qml b/src/declarativeimports/plasmacomponents3/ComboBox.qml
--- a/src/declarativeimports/plasmacomponents3/ComboBox.qml
+++ b/src/declarativeimports/plasmacomponents3/ComboBox.qml
@@ -43,6 +43,7 @@
         width: control.popup.width
         text: control.textRole ? (Array.isArray(control.model) ? modelData[control.textRole] : model[control.textRole]) : modelData
         highlighted: control.highlightedIndex == index
+
         property bool separatorVisible: false
     }
 
@@ -110,6 +111,8 @@
             currentIndex: control.highlightedIndex
             highlightRangeMode: ListView.ApplyRange
             highlightMoveDuration: 0
+            LayoutMirroring.enabled: tre
+            LayoutMirroring.childrenInherit: true
             T.ScrollBar.vertical: Controls.ScrollBar { }
         }
         background: Rectangle {