I'm currently working on a project which has quite a few comps. For example, Comp 1 is the master comp where EVERYTHING is, all the shots, scenes etc. COMP 2 is the comp where several elements are for a specific shot I'm working on, they don't have liquify on them, but I can currently see the liquify effect. When I go into comps in COMP 2, this is where all the keyframes are for the liquify effect, and I can see them all clearly.
But in COMP 1, the liquify effect won't show at all?
Is this due to an error on my behalf, or a bug within AE?
I can see that the scale property has an effect on it. If I scale down the comp, the effect seems to work, but when I scale it up a certain amount, liquify is removed?
Without knowing exactly how your comps are set up and what your workflow is it's nearly impossible to diagnose the problem. Liquify works on comp size not on layer size. This may be part of the problem.