diff --git a/tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp b/tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
index 2a19a4a9e13..012fb17ee95 100644
--- a/tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
+++ b/tests/auto/widgets/itemviews/qheaderview/tst_qheaderview.cpp
@@ -229,6 +229,7 @@ private slots:
     void testModelMovingColumns();
     void testModelMovingRows();
 
+    void setDefaultSectionSizeRespectsColumnWidth();
 protected:
     void setupTestData(bool use_reset_model = false);
     void additionalInit();
@@ -3685,5 +3686,32 @@ void tst_QHeaderView::testModelMovingRows()
     QVERIFY(!hv.isSectionHidden(3));
 }
 
+void tst_QHeaderView::setDefaultSectionSizeRespectsColumnWidth()
+{
+    QTreeWidget tree;
+    tree.setHeaderItem(new QTreeWidgetItem({"Col 0", "Col 1", "Col 2"}));
+    tree.header()->setStretchLastSection(false);
+
+    int columnWidths[3] = {};
+    for (int c = tree.columnCount() - 1; c >= 0; --c) {
+        columnWidths[c] = tree.columnWidth(c) * 2;
+        tree.setColumnWidth(c, columnWidths[c]);
+    }
+    tree.show();
+    QVERIFY(QTest::qWaitForWindowExposed(&tree));
+
+    for (int c = 0; c < tree.columnCount(); ++c)
+        QTRY_COMPARE(tree.columnWidth(c), columnWidths[c]);
+
+    // trigger a style change event
+    tree.setStyleSheet("QTreeView { qproperty-headerHidden: true }");
+    QTRY_COMPARE(tree.isHeaderHidden(), true);
+    tree.setStyleSheet("QTreeView { qproperty-headerHidden: false }");
+    QTRY_COMPARE(tree.isHeaderHidden(), false);
+
+    for (int c = 0; c < tree.columnCount(); ++c)
+        QTRY_COMPARE(tree.columnWidth(c), columnWidths[c]);
+}
+
 QTEST_MAIN(tst_QHeaderView)
 #include "tst_qheaderview.moc"