tst_qquickwidget::tabKey() is flaky on opensuse

gent:2019/04/15 08:32:14 build.go:655: 
agent:2019/04/15 08:32:14 build.go:449: Executing instruction 479 of 486 - RunQtUnitTest
agent:2019/04/15 08:32:14 runner.go:72: Generating test results with TESTARGS=-o /home/qt/work/testresults/tests/auto/quickwidgets/qquickwidget433161484,xml -o -,txt
agent:2019/04/15 08:32:14 build.go:314: [make check -j1] 900 900
agent:2019/04/15 08:32:14 build.go:192: /home/qt/work/qt/qtdeclarative/tests/auto/quickwidgets/qquickwidget/target_wrapper.sh  ./tst_qquickwidget -o /home/qt/work/testresults/tests/auto/quickwidgets/qquickwidget433161484,xml -o -,txt
agent:2019/04/15 08:32:15 build.go:192: ********* Start testing of tst_qquickwidget *********
agent:2019/04/15 08:32:15 build.go:192: Config: Using QtTest library 5.12.3, Qt 5.12.3 (x86_64-little_endian-lp64 shared (dynamic) debug build; by GCC 7.4.0)
agent:2019/04/15 08:32:15 build.go:192: PASS   : tst_qquickwidget::initTestCase()
agent:2019/04/15 08:32:15 build.go:192: PASS   : tst_qquickwidget::showHide()
agent:2019/04/15 08:32:15 build.go:192: PASS   : tst_qquickwidget::reparentAfterShow()
agent:2019/04/15 08:32:15 build.go:192: PASS   : tst_qquickwidget::changeGeometry()
agent:2019/04/15 08:32:15 build.go:192: PASS   : tst_qquickwidget::resizemodeitem()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::layoutSizeChange()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::errors()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::engine()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::readback()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::renderingSignals()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::grab()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::grabBeforeShow()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::reparentToNewWindow()
agent:2019/04/15 08:32:16 build.go:192: PASS   : tst_qquickwidget::nullEngine()
agent:2019/04/15 08:32:17 build.go:192: PASS   : tst_qquickwidget::keyEvents()
agent:2019/04/15 08:32:17 build.go:192: PASS   : tst_qquickwidget::shortcuts()
agent:2019/04/15 08:32:17 build.go:192: PASS   : tst_qquickwidget::enterLeave()
agent:2019/04/15 08:32:17 build.go:192: PASS   : tst_qquickwidget::mouseEventWindowPos()
agent:2019/04/15 08:32:17 build.go:192: PASS   : tst_qquickwidget::synthMouseFromTouch(no synth, accept)
agent:2019/04/15 08:32:18 build.go:192: PASS   : tst_qquickwidget::synthMouseFromTouch(no synth, don't accept)
agent:2019/04/15 08:32:18 build.go:192: PASS   : tst_qquickwidget::synthMouseFromTouch(synth and accept)
agent:2019/04/15 08:32:18 build.go:192: PASS   : tst_qquickwidget::synthMouseFromTouch(synth, don't accept)
agent:2019/04/15 08:32:18 build.go:192: FAIL!  : tst_qquickwidget::tabKey() 'qqw->hasFocus()' returned FALSE. ()
agent:2019/04/15 08:32:18 build.go:192:    Loc: [tst_qquickwidget.cpp(644)]
agent:2019/04/15 08:32:18 build.go:192: PASS   : tst_qquickwidget::cleanupTestCase()
agent:2019/04/15 08:32:18 build.go:192: Totals: 23 passed, 1 failed, 0 skipped, 0 blacklisted, 3525ms
agent:2019/04/15 08:32:18 build.go:192: ********* Finished testing of tst_qquickwidget *********
agent:2019/04/15 08:32:18 build.go:192: Makefile:326: recipe for target 'check' failed
agent:2019/04/15 08:32:18 build.go:192: make: *** [check] Error 1
agent:2019/04/15 08:32:18 build.go:236: Process finished with error: exit status 2
agent:2019/04/15 08:32:18 build.go:195: Error reading from stdout/err: exit status 2
agent:2019/04/15 08:32:38 runner.go:153: Re-running tests/auto/quickwidgets/qquickwidget with TESTARGS=tabKey
agent:2019/04/15 08:32:38 build.go:314: [make check -j1] 900 900