Here's an odd one for you: clicking the very top of the screen above the title bar allows you to click onto the drawing area and create a bone. This is irksome when I'm trying to switch focus back to the Spine window.
Notice the mouse icon changes to the create bone icon at the top of the screen.
Reproduction steps:
Maximize the window
Select the Create Bone tool
Move the mouse to the very top of the window and click
I'm on Windows 10 and I'm running the latest Spine Beta. Thank you.