**System Information**
Operating system: Linux 5.9.12 Manjaro
Graphics card: Intel Haswel (HD Graphics 4600)
**Blender Version**
Broken: 2.92
**Short description of error**
When I use the Motion Blur with the Cycles I get artefacts of lightings on image and also more lighting noise. It happens don't always, I get it only on 316 frame of 1440 frames of my scene. You can compare render results which I got:
{F9508056}
{F9508058}
If I disabling the Motion Blur in Cycles preferences then I don't observe the issue.
**Exact steps for others to reproduce the error**
Open attached file and run rendering
{F9508062}