much better

components/StyledComboBox.qml

@@ -3,6 +3,7 @@ pragma ComponentBehavior: Bound
 import qs.config
 import QtQuick
 import QtQuick.Controls
+import Quickshell.Widgets
 
 ComboBox {
     id: control
@@ -41,7 +42,6 @@ ComboBox {
                     duration: Styling.animations.speed.fast
                 }
             }
-            radius: Styling.theme.radiusSelector
         }
         highlighted: control.highlightedIndex === index
     }
@@ -81,7 +81,10 @@ ComboBox {
         height: Math.min(contentItem.implicitHeight, control.Window.height - topMargin - bottomMargin)
         padding: 1
 
-        contentItem: ListView {
+        contentItem: ClippingWrapperRectangle {
+            radius: Styling.theme.radiusField
+
+            ListView {
                 clip: true
                 implicitHeight: contentHeight + 2
                 model: control.popup.visible ? control.delegateModel : null
@@ -89,6 +92,7 @@ ComboBox {
 
                 ScrollIndicator.vertical: ScrollIndicator {}
             }
+        }
 
         background: Rectangle {
             color: palette.window
@@ -97,8 +101,7 @@ ComboBox {
                     duration: Styling.animations.speed.fast
                 }
             }
-            bottomLeftRadius: Styling.theme.radiusField
+            radius: Styling.theme.radiusField
-            bottomRightRadius: Styling.theme.radiusField
         }
     }
 }

modules/wallpaper/Wallpaper.qml

@@ -26,6 +26,9 @@ StackView {
         Image {}
     }
 
+    Component.onCompleted: stack.replace(img, {
+        "source": stack.wallpaper
+    })
     onWallpaperChanged: stack.replace(img, {
         "source": stack.wallpaper
     })