Did you mean when the gesture is clicked outside of the canvas? Yes I'm aware of that as well. If the gesture is done inside the canvas however, it will use the touch location regardless of the zoom level.
I mainly use the mirror gesture to check whether my drawing is balanced, and mainly, it's used when you draw faces. This means that mostly, you'd need to be pretty zoomed in (since you're drawing the face), and this also means that the only option (if you're using mirror finger-gesture) is to use the touch position as anchor.
While I could understand that some would find the touch position helpful, my workflow and hand position (on the leftside of the screen) unfortunately forces me to always mirror the current view out of screen.
I believe the toggle-able option would accomodate the ux for my use case as well without having to bother the current existing use cases✨
Thank you for the kind hint! 💖✨