TPU Layer Problem - tow parts in one

Hi everyone, today’s my first post here.

I’m encountering an issue with my 3D printing of TPU parts (Sunlu). So far, everything has been going smoothly, and I’ve dialed in some great settings with excellent quality. However, recently I’ve noticed a problem where the upper part of the printed object is being separated from the lower part after completion. It’s like it’s not properly adhering. This issue repeats in subsequent prints, consistently occurring at the same spot.

Do any of you have any ideas about what might be causing this?

Thanks in advance.