diff --git a/src/kcmkwin/kwinrules/package/contents/ui/RulesEditor.qml b/src/kcmkwin/kwinrules/package/contents/ui/RulesEditor.qml
index 49ab2e15e5..83a99b02a2 100644
--- a/src/kcmkwin/kwinrules/package/contents/ui/RulesEditor.qml
+++ b/src/kcmkwin/kwinrules/package/contents/ui/RulesEditor.qml
@@ -173,7 +173,10 @@ ScrollViewKCM {
 
             section {
                 property: "section"
-                delegate: Kirigami.ListSectionHeader { label: section }
+                delegate: Kirigami.ListSectionHeader {
+                    label: section
+                    height: implicitHeight
+                }
             }
 
             delegate: Kirigami.AbstractListItem {
@@ -240,7 +243,6 @@ ScrollViewKCM {
         onSheetOpenChanged: {
             searchField.text = "";
             if (sheetOpen) {
-                overlayModel.ready = true;
                 searchField.forceActiveFocus();
             } else {
                 overlayModel.onlySuggestions = false;
@@ -290,19 +292,8 @@ ScrollViewKCM {
             invalidateFilter();
         }
 
-        // Delay the model filtering until `ready` is set
-        // FIXME: Workaround https://bugs.kde.org/show_bug.cgi?id=422289
-        property bool ready: false
-        onReadyChanged: {
-            invalidateFilter();
-        }
-
         filterString: searchField.text.trim().toLowerCase()
         filterRowCallback: (source_row, source_parent) => {
-            if (!ready) {
-                return false;
-            }
-
             var index = sourceModel.index(source_row, 0, source_parent);
 
             var hasSuggestion = sourceModel.data(index, RulesModel.SuggestedValueRole) != null;