Wonder if it is a bug or not... but here is my UseCase.
I have two shades. I want to control them as a group. As suggested by @bravenel in one of the earlier post I am using the room lighting to activate both of them. This works fine.
I am using the Zigbee Generic Driver for both of the shade.
If I independently open the shades with the remote ( not by HE), the position will be updated in activation settings (below),
but the information is not propagated to the grouping.
So in that case I cannot use the grouping to close back the shades since the group thinks they are already closed.