Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NA (AMD 15D8:C8 ATI Technologies Inc. 4.5.14757 Core Profile Context 20.11.2 27.20.14501.18003)
Broken: version: 2.79b through 2.92.0 Alpha, branch: master, commit date: 2020-11-28 19:27, hash: rB458d8a423a2f
Worked: (newest version of Blender that worked as expected)
Short description of error
A strong Moiré pattern appears in object normals if viewed from a distance (doesn't have to be very far). More easily noticeable if constantly moving in viewport or by switching to 'Normal' render pass.
Exact steps for others to reproduce the error
1). Add brick texture to default cube material
2). Increase the brick texture scale to something high like 40
3.)Add bump node
4.) Connect brick texture color output to Bump node height input
5). Switch to 'Normal' render pass from the overlay
6). Zoom out and move the camera a little and observe the Moiré pattern in the normals.