Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.86
Broken: version: 2.81 (sub 14), branch: master, commit date: 2019-10-06 14:05, hash: rB54a9649e2636
Short description of error
Blender CM for GP is inconsistent between viewport and render. Viewport is not affected by Filmic, but render is.
Exact steps for others to reproduce the error
In a new file, add a GP Suzanne. Change viewport to RENDERED. Render and compare colors/contrast: they are different.
Change CM from Filmic to Standard. Render and compare again: they match.