Negative y_center in annotations.json at id 371

[ThibaultEbroussard]

Hello,

In annotations.json, at id 371, I noticed that there is a negative value for y_center.

file: /data/annotations.json
id: 371
value: 'bbox': [1003.0, -1.0, 787.0, 411.0]

[ThibaultEbroussard]

After a scan I have found another negative values for x_center or y_center:

id: 387
bbox: [1408.0, -1.0, 369.0, 471.0]

id: 707
bbox: [0.0, -1.0, 1352.0, 2364.0]

id: 859
bbox: [-1.0, 366.0, 198.0, 307.0]

id: 1621
bbox: [799.0, -1.0, 492.0, 484.0]

id: 1777
bbox: [171.03125, -1.3166667, 518.35625, 413.4333367]

id: 2186
bbox: [1311.0, -0.5, 286.0, 589.0]