Drag & scroll page when transform css

[nelunull22123]

Subject of the issue

chrome_Op3quBHlGb.mp4

Steps to reproduce

If you start dragging an element when the grid has a css transform property, scrolling with the mouse does not work correctly

https://gridstackjs.com/demo/transform.html#

[adumesny]

scaling is not something I wanted to work on, but others have contributed to it but looks like they are not handling scroll...

[nelunull22123]

scaling is not something I wanted to work on, but others have contributed to it but looks like are not handling scroll...

This is very important to me :(

If you have time, fixing the scrolling would be ideal

[adumesny]

| This is very important to me :(

well donate for it then. but not something I want to work on...