Operating system: Windows 10
Graphics card: GTX 1050

Broken: 2.90 beta, 9de5adc6a1a9, August 03, 2020

There is motion blur on linked collections when they are animated and parented to the camera, even though they are stationary with respect to the camera.

Exact steps:

1. Link the collection "Cubestack" from file
   20200804cubecollectionscene.blend786 KBDownload
   into a new Blender file.
2. Parent the camera to it.
3. Animate the linked collection. There is motion blur on it, when there is not supposed to be motion blur.

Note: I made a mistake in T79393, so I am uploading this corrected bug report.