Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.48
Short description of error
Curves aren't showing up correctly in 2.83beta. In 2.82, complex curve objects (e.g. CAD plans) displayed fine. In 2.83, the curve object isn't displaying properly. See the image below.
This is because curves dont display any wires as soon as any faces are generated (due to filling in this case) and only display the faces instead
Exact steps for others to reproduce the error
Load a complex CAD plan in 2.82a.
Save the .blend file
Open in 2.83beta
Notice the difference