tst_QQuickDropArea::containsDrag_internal() failed on Ubuntu 20.04 in CI

agent:2020/11/05 09:48:10 build.go:379: /home/qt/work/qt/qtdeclarative/tests/auto/quick/qquickdroparea/target_wrapper.sh  ./tst_qquickdroparea -o /home/qt/work/testresults/tests/auto/quick/qquickdroparea175389353,xml -o /home/qt/work/testresults/tests/auto/quick/qquickdroparea175389353-junit,xunitxml -o -,txt
agent:2020/11/05 09:48:11 build.go:379: ********* Start testing of tst_QQuickDropArea *********
agent:2020/11/05 09:48:11 build.go:379: Config: Using QtTest library 6.0.0, Qt 6.0.0 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 9.3.0), ubuntu 20.04
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::initTestCase()
agent:2020/11/05 09:48:11 build.go:379: FAIL!  : tst_QQuickDropArea::containsDrag_internal() Compared values are not the same
agent:2020/11/05 09:48:11 build.go:379:    Actual   (evaluate<bool>(dropArea, "containsDrag")): 0
agent:2020/11/05 09:48:11 build.go:379:    Expected (true)                                    : 1
agent:2020/11/05 09:48:11 build.go:379:    Loc: [tst_qquickdroparea.cpp(138)]
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::containsDrag_external()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::keys_internal()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::keys_external()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::source_internal()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::position_internal()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::position_external()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::drop_internal()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::competingDrags()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::simultaneousDrags()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::dropStuff()
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::nestedDropAreas(dropRectDropRect)
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::nestedDropAreas(rectDropRectDrop)
agent:2020/11/05 09:48:11 build.go:379: PASS   : tst_QQuickDropArea::cleanupTestCase()
agent:2020/11/05 09:48:11 build.go:379: Totals: 14 passed, 1 failed, 0 skipped, 0 blacklisted, 576ms
agent:2020/11/05 09:48:11 build.go:379: ********* Finished testing of tst_QQuickDropArea *********