Usability - dragging vertical divider for binder[BUG LOGGED]

Not a bug, but the “hot spot” for dragging the vertical dividers to resize the binder and inspector seems to be very narrow - perhaps just one pixel?

This makes it quite difficult to reliably drag the dividers - I often “miss” the hotspot and need to try a couple of times before I start dragging at the right place.

It would be great if it were possible to widen the active area for dragging.

Thanks

Alastair