This is frustrating. I have the exact same issue. I was really hoping that someone would have answered the OP’s question, because then it would have answered mine too.
So often I see answers that don’t address the issue asked, but instead just challenge the OP’s question. I don’t mean that disrespectfully. But why not just answer what was asked instead of second-guessing the question?
I too have a PS file with a timeline and when imported into AE some of the layers act funky. They move and scale on their own.
Hope this can be addressed. Thanks.