Operating system: Darwin-17.2.0-x86_64-i386-64bit 64 Bits
Graphics card: NVIDIA GeForce GTX 1050 Ti OpenGL Engine NVIDIA Corporation 4.1 NVIDIA-10.27.6 3188.8.131.52.20.109
Broken: version: 2.81 (sub 8), branch: master, commit date: 2019-09-05 23:31, hash: rB9972d6c30620
Worked: 2.79 and previous
Short description of error
The driver value does not animate along the curve like it did in previous versions of blender (2.79 and earlier)
Exact steps for others to reproduce the error
Add a driver to any applicable object.
Animate this value
The value will not slide along the curve.
(See attached videos)