diff --git a/kcmkwin/kwinrules/package/contents/ui/OptionsComboBox.qml b/kcmkwin/kwinrules/package/contents/ui/OptionsComboBox.qml
index 674c51fa9..e5b982e75 100644
--- a/kcmkwin/kwinrules/package/contents/ui/OptionsComboBox.qml
+++ b/kcmkwin/kwinrules/package/contents/ui/OptionsComboBox.qml
@@ -1,119 +1,115 @@
 /*
  * Copyright (c) 2020 Ismael Asensio <isma.af@gmail.com>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License or (at your option) version 3 or any later version
  * accepted by the membership of KDE e.V. (or its successor approved
  * by the membership of KDE e.V.), which shall act as a proxy
  * defined in Section 14 of version 3 of the license.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 import QtQuick 2.14
 import QtQuick.Layouts 1.14
 import QtQuick.Controls 2.14 as QQC2
 
 import org.kde.kirigami 2.10 as Kirigami
 
 
 QQC2.ComboBox {
     id: optionsCombo
 
     textRole: "display"
     //FIXME: After Qt 5.14 this can be replaced by the new implemented properties:
     //  Not yet. It is affected by: https://bugs.kde.org/show_bug.cgi?id=419521
     // ("QQC2.ComboBox.valueRole\" is not available due to component versioning.\n")
     //      valueRole: "value"
     property var currentValue
     property var values: []
 
+    onActivated: (index) => {
+        currentValue = values[index];
+    }
+
     property bool multipleChoice: false
     property int selectionMask: 0
 
     currentIndex: multipleChoice ? -1 : model.selectedIndex
 
-    onActivated: (index) => {
-        currentValue = values[index];
+    displayText: {
+        if (!multipleChoice) {
+            return currentText;
+        }
+        var selectionCount = selectionMask.toString(2).replace(/0/g, '').length;
+        switch (selectionCount) {
+            case 0:
+                return i18n("None selected");
+            case 1:
+                // FIXME: Bug 419521
+                //      var selectedValue = selectionMask.toString(2).length - 1;
+                //      return textAt(indexOfValue(selectedValue));
+                for (var i = 0; i < count; i++) {
+                    if (selectionMask & (1 << values[i])) { return textAt(i); }
+                }
+                break;
+            case count:
+                return i18n("All selected");
+            default:
+                return i18np("1 selected", "%1 selected", selectionCount);
+        }
     }
 
-    onSelectionMaskChanged: updateDisplayText()
-    onCountChanged: updateDisplayText()
-    Component.onCompleted: updateDisplayText()
-
     delegate: QQC2.ItemDelegate {
-        readonly property bool reversed : Qt.application.layoutDirection === Qt.RightToLeft
-
         highlighted: optionsCombo.highlightedIndex == index
         width: parent.width
 
-        LayoutMirroring.enabled: reversed
+        LayoutMirroring.enabled: Qt.application.layoutDirection === Qt.RightToLeft
         LayoutMirroring.childrenInherit: true
 
         contentItem: RowLayout {
             QQC2.CheckBox {
                 id: itemSelection
                 visible: multipleChoice
                 checked: (selectionMask & (1 << value))
                 onToggled: {
                     selectionMask = (selectionMask & ~(1 << value)) | (checked << value);
                     activated(index);
                 }
             }
             Kirigami.Icon {
                 source: model.decoration
                 Layout.preferredHeight: Kirigami.Units.iconSizes.small
                 Layout.preferredWidth: Kirigami.Units.iconSizes.small
             }
             QQC2.Label {
                 text: model.display
                 color: highlighted ? Kirigami.Theme.highlightedTextColor : Kirigami.Theme.textColor
                 Layout.fillWidth: true
                 horizontalAlignment: Text.AlignLeft
             }
         }
 
         QQC2.ToolTip {
             text: model.tooltip
             visible: hovered && (model.tooltip != "")
         }
 
         Component.onCompleted: {
             values[index] = model.value;
             optionsCombo.popup.width = Math.max(implicitWidth, optionsCombo.width, optionsCombo.popup.width);
         }
 
         onFocusChanged: {
             if (!focus) popup.close();
         }
     }
-
-    function updateDisplayText() {
-        if (multipleChoice) {
-            displayText = selectionText();
-        }
-    }
-
-    function selectionText() {
-        var selectionCount = selectionMask.toString(2).replace(/0/g, '').length;
-        switch (selectionCount) {
-            case 0: return i18n("None selected");
-            case count: return i18n("All selected");
-            case 1: break; // return textAt(indexOfValue(selectionMask));
-            default: return i18np("1 selected", "%1 selected", selectionCount);
-        }
-        // Return the text at the only selected index
-        for (var i = 0; i < count; i++) {
-            if (selectionMask & (1 << values[i])) { return textAt(i); }
-        }
-
-    }
 }