Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: GeForce GTX 780/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e
Short description of error
Smoke renders haphazardly in the viewport. see https://youtu.be/WY1FIet4P40
Sometimes it's fixed by toggling Adaptive Domain on/off and changing its Add Reosultion value up, e.g. 0, 16, 512, 32, 64, etc.
This is random and not guaranteed to fix it.
Exact steps for others to reproduce the error
Open the attached .blend file, Play (hit Space).
Smoke sometimes renders correctly in the viewport, sometimes it doesn't.