Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 970/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.00
Broken: version: 2.83 (sub 10), branch: master, commit date: 2020-03-19 13:43, hash: rB42012493a8e1
Short description of error
In Blender 2.83, when rendering a project containing a grease pencil drawing initially made with blender 2.82, the anti-aliasing seems to work randomly.
Maybe related: if you add a grease pencil monkey, remove all light in the scene and render, the anti-aliasing seems to be deactivated and behave like in the picture below.
Exact steps for others to reproduce the error
Open attached file then render.