I've recently noticed that when I create a clipping mask over a group of objects and then 'trim' to make it a permanent edit, some jaggies appear between the seams of the overlapping objects. It creates a gap between adjacent objects - I can actually see the background through these gaps. When I turn anti-aliasing off in preferences these jaggy gaps disappear. It's obviously some kind of weird anomaly with the way anti-aliasing works, but is there anything I can do to remedy the problem without having to turn off anti-aliasing?