diff --git a/tests/auto/widgets/kernel/qwidget_window/BLACKLIST b/tests/auto/widgets/kernel/qwidget_window/BLACKLIST
index 77853a3e8c6..21628287eda 100644
--- a/tests/auto/widgets/kernel/qwidget_window/BLACKLIST
+++ b/tests/auto/widgets/kernel/qwidget_window/BLACKLIST
@@ -16,3 +16,5 @@ android
 # QTBUG-96270
 [tst_paintEventOnSecondShow]
 opensuse
+[setWindowState:maximized]
+xcb ubuntu-24.04 # QTBUG-129026