Wrong annotation in the dumped file

My actions before raising this issue

[x] Read/searched the docs
[x] Searched past issues

Expected Behaviour

Annotation is dumped correctly

Current Behaviour

For a reason the dumped annotation for multi-job tasks may contain some extra shapes which don't exist in the database for this job. UI representation is correct: For example frame 86496 of 34372 job:

<image id="86496" name="336728.png" width="288" height="144">
    <box label="bad_quality" occluded="0" source="manual" xtl="0.00" ytl="0.00" xbr="288.00" ybr="144.00">
    </box>
    <box label="wrong_subject" occluded="0" source="manual" xtl="0.00" ytl="0.00" xbr="288.00" ybr="144.00">
    </box>
  </image>

>>> db_job = Job.objects.filter(id=34372)[0]
>>> db_shapes = db_job.labeledshape_set.filter(frame=86496)
>>> db_shapes.count()
1

Update: For some reason, other jobs contain annotations for this frame and this is causing the wrong shapes to appear in the dump file

>>> db_job = Job.objects.filter(id=34371)[0]
>>> db_shapes = db_job.labeledshape_set.filter(frame=86496)
>>> db_shapes.count()
1

Possible Solution

Steps to Reproduce (for bugs)

N/A

Context

Your Environment

Git hash commit (git log -1): a222741f6b3c9fea4f363f475ef9fcd4a85c6a7d
Docker version docker version (e.g. Docker 17.0.05): 19.03.6
Are you using Docker Swarm or Kubernetes?
Operating System and version (e.g. Linux, Windows, MacOS): Ubuntu 18.04
Code example or link to GitHub repo or gist to reproduce problem:
Other diagnostic information / logs:

Logs from `cvat` container

Next steps

You may join our Gitter channel for community support.

cvat-ai / cvat

Wrong annotation in the dumped file #2254