@apps
Right, yes.
So what is happening is that I will zoom with my fingers, and many times (but not always), the moment I lift my fingers, the image reverts to the original 'not-zoomed' size.
In the cases where the image stays zoomed, often (but again, not always) if I drag the image to see a different part of it, the same thing will happen: when I lift my finger, the image reverts to the 'not-zoomed' size.
Thanks for taking the time :)