diff --git a/src/widgets/styles/qstylesheetstyle.cpp b/src/widgets/styles/qstylesheetstyle.cpp
index fccc4f33a2..3e55bdaabc 100644
--- a/src/widgets/styles/qstylesheetstyle.cpp
+++ b/src/widgets/styles/qstylesheetstyle.cpp
@@ -4853,13 +4853,12 @@ int QStyleSheetStyle::pixelMetric(PixelMetric m, const QStyleOption *opt, const
             return 0;
         break;
 
-    case PM_TabBarScrollButtonWidth:   {
+    case PM_TabBarScrollButtonWidth:
         subRule = renderRule(w, opt, PseudoElement_TabBarScroller);
         if (subRule.hasContentsSize()) {
             QSize sz = subRule.size();
-            return sz.width() != -1 ? sz.width() : sz.height();
+            return (sz.width() != -1 ? sz.width() : sz.height()) / 2;
         }
-                                        }
         break;
 
     case PM_TabBarTabShiftHorizontal:
@@ -5918,6 +5917,12 @@ QRect QStyleSheetStyle::subElementRect(SubElement se, const QStyleOption *opt, c
         }
         break;
 
+    case SE_TabBarScrollLeftButton:
+    case SE_TabBarScrollRightButton:
+        if (hasStyleRule(w, PseudoElement_TabBarScroller))
+            return ParentStyle::subElementRect(se, opt, w);
+        break;
+
     case SE_TabBarTearIndicator: {
         QRenderRule subRule = renderRule(w, opt, PseudoElement_TabBarTear);
         if (subRule.hasContentsSize()) {