diff --git a/desktoppackage/contents/explorer/AppletDelegate.qml b/desktoppackage/contents/explorer/AppletDelegate.qml
--- a/desktoppackage/contents/explorer/AppletDelegate.qml
+++ b/desktoppackage/contents/explorer/AppletDelegate.qml
@@ -207,27 +207,36 @@
                     }
                 }
             }
+
+            // FIXME: These  labels are center-aligned with a maximum width instead
+            // of the more conventional combination of "Layout.fillWidth: true"
+            // and "horizontalAlignment: Text.AlignHCenter" because that combination
+            // triggers https://bugreports.qt.io/browse/QTBUG-49646
+            // centering doesn't work when lineCount > 1 so then we turn Text.AlignHCenter on again
+
             PlasmaExtras.Heading {
                 id: heading
-                Layout.fillWidth: true
+                Layout.alignment: Qt.AlignHCenter
+                Layout.maximumWidth: mainLayout.width
                 level: 4
                 text: model.name
                 elide: Text.ElideRight
                 wrapMode: Text.WordWrap
                 maximumLineCount: 2
                 lineHeight: 0.95
-                horizontalAlignment: Text.AlignHCenter
+                horizontalAlignment: lineCount > 1 ? Text.AlignHCenter : undefined
             }
             PlasmaComponents.Label {
-                Layout.fillWidth: true
+                Layout.alignment: Qt.AlignHCenter
+                Layout.maximumWidth: mainLayout.width
                 // otherwise causes binding loop due to the way the Plasma sets the height
                 height: implicitHeight
                 text: model.description
                 font.pointSize: theme.smallestFont.pointSize
                 wrapMode: Text.WordWrap
                 elide: Text.ElideRight
                 maximumLineCount: heading.lineCount === 1 ? 3 : 2
-                horizontalAlignment: Text.AlignHCenter
+                horizontalAlignment: lineCount > 1 ? Text.AlignHCenter : undefined
             }
         }
     }