zoom() not behaving as expected

[DaveMoTron]

Hi there, I would love to provide a working example of my issue, however when recreating it outside my complex app, it works as expected.

My issue is, trying to use the zoom() function to zoom programattically, it's zooming in off center. the zoomIn() function works nicely (zooms on the center of the viewport), as does zooming on a mousepoint, it's only the zoom() function that's not playing along.

I was wondering if you could give me some insight into what could cause it to behave like this? A fit and centered svg, trigger zoom(10) and suddenly it's shot off into the top left corner.

Thanks for your time, apologies for the lack of code examples.