extras::Tests_PieMenu() failures on all platforms in qt5 update, 5.12

agent:2018/08/27 17:07:44 build.go:187: 	call C:\Users\qt\work\qt\qtquickcontrols\tests\auto\extras\target_wrapper.bat  release\tst_extras.exe -o C:\Users\qt\work\testresults\tests\auto\extras481166915,xml -o -,txt
agent:2018/08/27 17:07:44 build.go:187: ********* Start testing of extras *********
agent:2018/08/27 17:07:44 build.go:187: Config: Using QtTest library 5.12.0, Qt 5.12.0 (x86_64-little_endian-llp64 shared (dynamic) release build; by MSVC 2015)
agent:2018/08/27 17:07:44 build.go:187: PASS   : extras::Tests_CircularGauge::initTestCase()
...
agent:2018/08/27 17:07:50 build.go:187: PASS   : extras::Tests_PieMenu::test_bounds(noSnapNearBottomLeft)
agent:2018/08/27 17:07:50 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(leftEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:407: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:50 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(leftEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:415: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:50 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(leftEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:424: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:50 build.go:187: FAIL!  : extras::Tests_PieMenu::test_bounds(leftEdge) Compared values are not the same
agent:2018/08/27 17:07:50 build.go:187:    Actual   (): true
agent:2018/08/27 17:07:50 build.go:187:    Expected (): false
agent:2018/08/27 17:07:50 build.go:187: C:\Users\qt\work\qt\qtquickcontrols\tests\auto\extras\data\tst_piemenu.qml(507) : failure location
agent:2018/08/27 17:07:50 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(rightEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:407: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:50 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(rightEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:415: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:51 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(rightEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:424: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:51 build.go:187: FAIL!  : extras::Tests_PieMenu::test_bounds(rightEdge) Compared values are not the same
agent:2018/08/27 17:07:51 build.go:187:    Actual   (): true
agent:2018/08/27 17:07:51 build.go:187:    Expected (): false
agent:2018/08/27 17:07:51 build.go:187: C:\Users\qt\work\qt\qtquickcontrols\tests\auto\extras\data\tst_piemenu.qml(507) : failure location
agent:2018/08/27 17:07:51 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(topEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:407: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:51 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(topEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:415: ReferenceError: mouseY is not defined
agent:2018/08/27 17:07:51 build.go:187: QWARN  : extras::Tests_PieMenu::test_bounds(topEdge) file:///C:/Users/qt/work/install/qml/QtQuick/Extras/PieMenu.qml:424: ReferenceError: mouseY is not defined
...
agent:2018/08/27 17:08:08 build.go:187: FAIL!  : extras::Tests_PieMenu::test_triggerMode() Menu isn't closed when clicking Qt.LeftButton outside (triggerMode: TriggerOnClick, openButton: Qt.LeftButton)
agent:2018/08/27 17:08:08 build.go:187:    Actual   (): true
agent:2018/08/27 17:08:08 build.go:187:    Expected (): false
agent:2018/08/27 17:08:08 build.go:187: C:\Users\qt\work\qt\qtquickcontrols\tests\auto\extras\data\tst_piemenu.qml(177) : failure location
agent:2018/08/27 17:08:08 build.go:187: PASS   : extras::Tests_PieMenu::cleanupTestCase()
agent:2018/08/27 17:08:08 build.go:187: QWARN  : extras::UnknownTestFunc() file:///C:/Users/qt/work/install/qml/QtTest/testlogger.js:94: TypeError: Property 'splice' of object 0 is not a function
...