**System Information**
Mac OSX 10.9.4 with a Nvidia GeForce 660
**Blender Version**
Broken: 2014-09-02 Hash 39c7ccc
Worked: (optional)
**Short description of error**
If you animate a value inside of a group node, the effect of this animated parameter is not reflected in the realtime rendered viewport preview. If you exit the rendered mode and then go back into it, the value refreshes to properly show the effect, but scrubbing will not update that value.
**Exact steps for others to reproduce the error**
I've included a blend file to show this effect. The boxes should become transparent over time and this should be reflected in the realtime preview but it does not update the opacity when scrubbing. If you exit the rendered mode, scrub the timeline and go back in, you will see an update to the opacity.
NOTE: I'm animating a value in a group node so I can adjust one slider to affect multiple object/shaders at once.
{F108292}