Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: Radeon RX Vega ATI Technologies Inc. 4.5.13558 Core Profile Context 26.20.11015.5009
2x RX Vega 56
Broken: version: 2.80 (sub 74), branch: blender2.7, commit date: 2019-06-06 00:27, hash: rB8b2b79c2108b
Worked: Works with CPU rendering, not GPU, OpenCL, have not tested Nivida cuda.
Short description of error
Trying to render freestyle edges on a transparent background. Monitors go black for a short time, comes back and blender is in a frozen state.
Exact steps for others to reproduce the error
Change device to GPU,
Go to film section, enable transparent,
Go to view layer tab, find the filter section, deselect all except freestyle.
Just tested on a laptop with Geforce 1050 and cuda. It works