I think there is a bug in the shake effect (Scaled). I’ve tried everything but it seems the start position of the scaled frame is not exactly the same as the one at the end of the shake.
I noticed this trying to do a very slow continuous wavy motion adding shake effects one after the other. Where ever the track is sliced and a new shake effect starts the picture jumps 10 or so pixels to the left.
Or is it just me?