reikon Hi! I don't know what is it, but i can't delete animation keys by double-clicking. It's Spine 3.8.99 version.
Nate Sorry about that! It was a bug in 3.8.99. We didn't want to make a release with a version number like 3.8.100 but not being able to double click is very annoying, so we re-released 3.8.99 with a fix. To get it you just need to delete your 3.8.99 file and let Spine download it again.