Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.60
Broken: version: 2.81 (sub 10), branch: master, commit date: 2019-09-10 22:12, hash: rB4ce3fbd52ae8
Short description of error
A test eyeball render shows the cornea (transparent) area of the eye blackened in 2.81, this same file rendered fine in 2.8.
Attaching screen cap and a the test file. Note: Also tested this file as far back as the Sept 9, 2019 version and it is broken there too.
Not sure if this is a bug or a new setting that I have missed.