Parts elements not working separately from score

I was working with a score and extracted the individual parts. Then, I immediately unabled the synchronization between parts and score for the elements I had to reposition or change in any way, so that the modifications made in the parts would not change anything in the score and vice versa. This worked well for most elements, but as soon as I repositioned some crescendo and decrescendo hairpins, the same elements in the original score started going out of the specific position I had put them (I was also careful to unable the auto-place funcion, as I believed it could make a difference, but it didn't change anything).

Anyways, the only way I could make it work was to set each part as I wanted, then export each of them, then fixing the issues on the score and exporting it. I don't know if its a bug or if I should be doing something differently from the way I did, but I hope it gets fixed if it's a bug.

Thanks for your attention!