test_ttk: NotebookTest.test_traversal() fails randomly on Windows #161634

0:06:31 load avg: 3.87 mem:   64.3 MiB [1/2/1] test_ttk failed (1 failure)
Re-running test_ttk in verbose mode (matching: test_traversal)
test_traversal (test.test_ttk.test_widgets.NotebookTest.test_traversal) ... FAIL

======================================================================
FAIL: test_traversal (test.test_ttk.test_widgets.NotebookTest.test_traversal)
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Traceback (most recent call last):
  File "D:\a\cpython\cpython\Lib\test\test_ttk\test_widgets.py", line 1297, in test_traversal
    self.assertEqual(self.nb.select(), str(self.child2))
    ~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: '.+label' != '.+label2'
- .+label
+ .+label2
?        +


Error: AssertionError: '.+label' != '.+label2'
- .+label
+ .+label2
?        +
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Ran 1 test in 0.174s

FAILED (failures=1)
test test_ttk failed