Sorry, I did not see your comment before, and I was very busy yesterday, so your message notification got lost.
Do you think you can make a video of your problem? I'm not sure I've heard of this happening before. Are you saying that all algorithms sound the same as if you were using Resample?
I also don't want to sound like a wanker! Who does? I love this plugin! Maybe your tail start marker is all the way at the start, so the tail and the punch don't get separated? Is the checkbox for Separate Tail checked?