diff --git a/sidebar/package/contents/ui/CategoriesPage.qml b/sidebar/package/contents/ui/CategoriesPage.qml
--- a/sidebar/package/contents/ui/CategoriesPage.qml
+++ b/sidebar/package/contents/ui/CategoriesPage.qml
@@ -30,7 +30,7 @@
     header: Rectangle {
         color: Kirigami.Theme.backgroundColor
         width: mainColumn.width
-        height: Kirigami.Units.gridUnit * 2.5
+        height: Math.round(Kirigami.Units.gridUnit * 2.5)
         RowLayout {
             id: searchLayout
             spacing: Kirigami.Units.smallSpacing
diff --git a/sidebar/package/contents/ui/SubCategoryPage.qml b/sidebar/package/contents/ui/SubCategoryPage.qml
--- a/sidebar/package/contents/ui/SubCategoryPage.qml
+++ b/sidebar/package/contents/ui/SubCategoryPage.qml
@@ -27,7 +27,7 @@
     id: subCategoryColumn
     header: MouseArea {
         width: subCategoryColumn.width
-        height: Kirigami.Units.gridUnit * 2.5
+        height: Math.round(Kirigami.Units.gridUnit * 2.5)
         enabled: !applicationWindow().wideScreen
         onClicked: root.pageStack.currentIndex = 0;
         Accessible.role: Accessible.Button