Issue with missing keypoints during export (CVAT local instance)

[DinohRatiarisandy]

Hello everyone,

We are currently facing an issue when exporting annotations from our locally hosted CVAT instance, and we are trying to understand whether this could be related to the version or a known bug.

Here are the details of our environment:

• Server version: 2.18.0
• Core version: 15.1.3
• Canvas version: 2.20.9
• UI version: 1.65.2

Our project is a keypoints tracking project where multiple people are annotated across video frames.

The problem appears during the export process. Regardless of the export format we choose, we notice that starting around frame 10, some persons lose their keypoint annotations in the exported dataset.

However, when we inspect the annotations directly in the CVAT interface, everything looks correct. All keypoints are visible and properly attached to the tracked persons.

So the issue seems to occur only during the export step.

What we observe:

• The annotations exist and are correct in the UI.
• During export, some tracked persons lose their keypoints from a certain frame onward.
• This happens across different export formats, not just one specific format.

We are wondering if:

• This might be related to the specific CVAT version we are using.
• There could be a known issue with keypoint tracking export.
• Or if we might be missing something in our task configuration or export settings.

Has anyone encountered a similar issue before?

Any advice on:

• possible causes,
• recommended export formats for keypoint tracking,
• or potential fixes/workarounds

would be greatly appreciated.

Thank you in advance for your help.