Actually that’s a bug. The Animation FX has the wrong reference point:
A flat bric will appear more soon than a high bric. If the bric is two full screens high (for example some columns of images), they won’t fade in at all.
The trick is the wrong reference point for the fade. At the moment, it is set to the middle of the animated section, but for fade in, it should be set to the top of the section, and for fade out to the bottom.
Any chance we can get this as an update, because at the moment it renders the fade function quite useless, same with the other animations, they start too late.