Spline add control point (long-click) not working

I’m running
Version 3.56.0 (647)
on a
MacBook Pro 13" M1 2020 (Mac OS 11.0.1)
Magic Mouse

Select spline
Click-and-hold to add a control point
No resulting control point.

Doesn’t work with either the mouse or trackpad.

Interesting, I can’t reproduce this. What do you mean by click and hold? With the mouse you just simply click to add control points.

The trick is, for now, you have to select the spline tool, before you can add the control points. So you have to select the spline tool in the tools menu, and then long press on the spline to add the control point.