Hi!
One of my favorite Spine features was the ability to select a bunch of keyframes and to hover the mouse to the side of the selection and get a horizontal resizer icon. Then I could drag to increase / decrease the timeline on which the keyframes were occurring. This let me quickly speed up or slow down animations.
The UI still registers as if this is going to happen (the mouse shows the horizontal resize pointer) but upon dragging, it is ignored and this feature no longer seems available!
Thanks! I really hope this is a bug and not intentional! 😃