Does not work for more than three root items

[ar19517]

Describe the bug
Stops working if the number of root items grows

To Reproduce

t1 = {
    "a": {
        "z": [{"a": ["1"], "b": ["2"]}],
        "y": ["a"],
        "x": [],
    },
    "b": "1",
    "c": "1",
}
t2 = {
    "a": {
        "z": [{"a": ["3"], "b": ["2"]}],
        "y": ["b"],
        "x": [],
    },
}
print( DeepDiff(t1, t2, ignore_order=True, verbose_level=2).get_stats() )

works as expected and outputs:
{'PASSES COUNT': 7, 'DIFF COUNT': 31, 'DISTANCE CACHE HIT COUNT': 0, 'MAX PASS LIMIT REACHED': False, 'MAX DIFF LIMIT REACHED': False}

but if I add one more root item

t1 = {
    "a": {
        "z": [{"a": ["1"], "b": ["2"]}],
        "y": ["a"],
        "x": [],
    },
    "b": "1",
    "c": "1",
    "d": "1",
}
t2 = {
    "a": {
        "z": [{"a": ["3"], "b": ["2"]}],
        "y": ["b"],
        "x": [],
    },
}
print( DeepDiff(t1, t2, ignore_order=True, verbose_level=2).get_stats() )

it fails

{'PASSES COUNT': 0, 'DIFF COUNT': 1, 'DISTANCE CACHE HIT COUNT': 0, 'MAX PASS LIMIT REACHED': False, 'MAX DIFF LIMIT REACHED': False}

Expected behavior
I expect, that the diff count increases by one

OS, DeepDiff version and Python version:

• OS: macOS
• Version 15.5
• Python Version 13.3
• DeepDiff Version 8.5.0

Additional context

[seperman]

Hi @ar19517
diff count is not how many items are reported as being different. It is how many times the diff function is run.