tst_qquickwindow::attachedProperty fails on macOS 10.11

/Users/qt/work/qt/qtdeclarative/tests/auto/quick/qquickwindow/target_wrapper.sh  ./tst_qquickwindow attachedProperty
********* Start testing of tst_qquickwindow *********
Config: Using QtTest library 5.9.0, Qt 5.9.0 (x86_64-little_endian-lp64 shared (dynamic) release build; by Clang 8.0.0 (clang-800.0.42.1) (Apple))
PASS   : tst_qquickwindow::initTestCase()
FAIL!  : tst_qquickwindow::attachedProperty() 'QTest::qWaitForWindowActive(innerWindow)' returned FALSE. ()
   Loc: [tst_qquickwindow.cpp(2181)]
PASS   : tst_qquickwindow::cleanupTestCase()
Totals: 2 passed, 1 failed, 0 skipped, 0 blacklisted, 5473ms
********* Finished testing of tst_qquickwindow *********