To reproduce the issue I’m having, open any image, e.g. blobs (Ctrl+Shift+B). Now, run Image > Scale… with X and Y Scale = 2, and uncheck “Create new window”.
This zooms the image 2 times but the image size does not change (why?), leading to image loss at the boundary.
I’m getting correct results with the “Create new window” checked.
Let me know if you can not reproduce this.