Audio Alignment Issue

Hi

I have recently updated to Nuendo 10. This very same problem is happening to me. I am used to aligning so I’m pretty sure I’m not doing anything wrong at all. I’ve watched tutorials just in case I’m making a mistake with the audio alignment tool in Nuendo, but all seems fine.

The audio is nowhere close when I align two vocals singing the same lines almost identically. There is no way it should warp it so differently. Is there a solution to this?