Mask offset

The mask is working but after every generation for some reason it have offset by 0.42 units for x and y
Maybe it's something with my project but I'm not sure. Both grid and tilemap are at 0, 0

<img width="880" height="422" alt="Image" src="https://github.com/user-attachments/assets/9a03fc8f-deee-4a01-8657-81fe60c7b525" />