Wrong Roboflow return result after prediction

Hi
I am trying out the api to return the result. The result of the bounding box seem to be off despite when I do the roboflow save action to save the image to visualize the bounding box. The save action shows the correct position of the bounding box but not the return result. Any advice?

predict = model.predict("test.jpg", confidence=40, overlap=0).json()
gives when the python return the json result:

{'x': 508.5, 'y': 212.5, 'width': 263.0, 'height': 225.0, 'confidence': 0.9291292428970337, 'class': 'car', 'image_path': 'test.jpg', 'prediction_type': 'ObjectDetectionModel'}
{'x': 233.0, 'y': 164.0, 'width': 40.0, 'height': 34.0, 'confidence': 0.8354455232620239, 'class': 'car', 'image_path': 'test.jpg', 'prediction_type': 'ObjectDetectionModel'}
{'x': 347.5, 'y': 173.0, 'width': 53.0, 'height': 146.0, 'confidence': 0.7597783803939819, 'class': 'person', 'image_path': 'test.jpg', 'prediction_type': 'ObjectDetectionModel'}

whereas if i drop the image into the roboflow ui to do the detection, using confidence level of 40 and overlap of 0, on the roboflow ui , it is
{
"predictions": [
{
"x": 406.5,
"y": 170,
"width": 211,
"height": 180,
"confidence": 0.929,
"class": "car"
},
{
"x": 277.5,
"y": 138.5,
"width": 43,
"height": 117,
"confidence": 0.84,
"class": "person"
},
{
"x": 186.5,
"y": 131.5,
"width": 31,
"height": 27,
"confidence": 0.784,
"class": "car"
}
]
}

Start with the model.predict("test.jpg", confidence=40, overlap=0).json() call and reproduce the reported coordinates for test.jpg. Compare those results with the Roboflow UI output and the saved visualization, then determine why the bounding boxes differ. Done means the API and UI results agree for this reproduction or the discrepancy is documented with a clear resolution.