Hello,
I saw this problem in a lot of older posts, but none of the resolutions there helped me.
My hierarchy is as follows:
Root
PanelA
PanelB
Each panel, has soft clipping, and between the 2, cover up the whole screen (see below screenshot)

What im trying to do, is for example, instantiate a new widget, as a child of panel B, but off the screen (and off the clipping area), and have it tween into position. Whats happening is, after it gets to its position, it doesnt show in the game scene, even though its there. It will only show if you slightly move one of its child objects, or disable/enable the whole widget.
Here is a screenshot from when the panel just finishes moving into place (and nothing is showing

)

And after moving it by hand, in the hierarchy, it finally shows

Whatever help I can get with this will greatly help me. If any other information or images are needed, I can post them asap. (Im using NGUI 3.9.8 & Unity 5.4) I tested with older versions of both NGUI & Unity, without luck
Thanks!