tst_QScrollBar::QTBUG_42871() fails on Android

agent:2020/12/10 20:11:04 build.go:379: 402: FAIL!  : tst_QScrollBar::QTBUG_42871() Compared values are not the same
agent:2020/12/10 20:11:04 build.go:379: 402:    Actual   (myHandler.updatesCount): 2
agent:2020/12/10 20:11:04 build.go:379: 402:    Expected (1)                     : 1
agent:2020/12/10 20:11:04 build.go:379: 402:    Loc: [/home/qt/work/qt/qtbase/tests/auto/widgets/widgets/qscrollbar/tst_qscrollbar.cpp(199)]
agent:2020/12/10 20:11:04 build.go:379: 402: PASS   : tst_QScrollBar::cleanupTestCase()
agent:2020/12/10 20:11:04 build.go:379: 402: Totals: 4 passed, 1 failed, 0 skipped, 1 blacklisted, 4549ms
agent:2020/12/10 20:11:04 build.go:379: 402: ********* Finished testing of tst_QScrollBar *********
agent:2020/12/10 20:11:05 build.go:379: 402: Execute /opt/android/sdk/platform-tools/adb uninstall org.qtproject.example.tst_qscrollbar.
agent:2020/12/10 20:11:05 build.go:379: 402: Success
agent:2020/12/10 20:11:05 build.go:379: 402/425 Test #402: tst_qscrollbar ..................................***Failed   13.08 sec