In WebApp Builder 1.1 - When you turn a Group off, it does not turn off the sublayers.
When you turn sublayers off, the Group checkbox doesn't do anything, now they won't turn on, or off. And it stays displayed as checked even after they turn off.
The Table of Contents (TOC) should behave like AGS TOC or the ArcMap TOC. Or any application with a hierarchical checkbox tree. Otherwise the Group checkbox gives the appearance of being able to turn child layers on/off when it can't. Unless anyone else is seeing it work? I see this in WAB Developer Edition as well as through ArcGIS Online.
While the TOC works through AGOL vs. communicating to the services directly through REST like AGS TOC; nevertheless, if it has the appearance of a hierarchical TOC it should also have this functionality and behavior. Has everyone seen what I mean or would anyone like me to post some example screenshots?