Operating system: Windows 10 64bits
Graphics card: 2x GTX 1070
Broken: Latest Beta Build of 2019-2-17
Worked: Al 2.79 versions
Short description of error
Curve radius isn't updated on viewport when connected to a driver.
Exact steps for others to reproduce the error
Create a simple bezier curve.
Add bevel, Fill mode Full.
Open N-Panel, under Transform, there is a radius option for each bezier point.
Create an empty.
Add a driver to the bezier point radius under Transform on N-Panel.
Under Driver Settings, use Avereged Values and under Object pick the Empty.
Try to move, scale or rotate the empty in any Axis and the radius does not update.
However, it updates once you enter the bezier curve edit mode.