Something strange has happened with I3D

[htowa]

Dear iashin

Thanks for the useful feature.

I noticed something strange when visualizing a deep layer of an i3D feature map.
This visualization is a 2D array visualized by summing along the channel dimension.
The human region should be activated, but for some reason the bottom right was activated in every frame.
It seems like the bottom right is activated at least in the deep channels.
I'm not sure if this is a bug or not. How can I fix it?