System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 430.86
Blender Version
Broken: version: 2.80 (sub 74), branch: master, commit date: 2019-07-11 13:50, hash: rB06312c6d2db8
Short description of error
While in texture paint, the texture always appear at 100% opacity regardless of the opacity setting in the overlay menu. Even when turn off the overlay, the texture remains at 100%.
Switch to look dev mode makes the texture disappear entirely.
Exact steps for others to reproduce the error
Set material and a texture for the default cube, switch to texture paint. The texture will appear regardless of opacity setting.