Operating system: macOS 10.14.1
Graphics card: Radeon Pro 560 4096 MB + Intel HD Graphics 630 1536 MB
2.80, e79bb957fc3, blender2.8, 2018-12-08 (built from source - no local changes)
Short description of error
Have noticed this for a while, any transparent shader is not transparent in the EVEE viewport (LookDev or Rendered), F12 render is the same obviously
Exact steps for others to reproduce the error
Load the attached file on a mac, see the problem in LookDev and Rendered, switch to Cycles and Render, transparent Materials are working.