I'm using the "underwater" behavior on an object, but as it moves, the front edge and the back edge "disappear" under the border of the object.
How can I make it move but not be cut off?
I tried to re-create your problem with the Underwater filter and I can't get the edge to disappear. What are your settings. Have you tried it with another clip to see if it is the clip? Can you zoom in on the clip to cover up the missing edge?