Spine Version: 4.0.47 beta professional
OS: MacOS Mojave 10.14.6, though a teammate is on Windows 10 with the same issue
I wanted to select all my keyframes so I could slow down or speed up my animation, but when selecting all bones on a rig, the dopesheet won't show me the keyframes for more than a few of them (somewhere between 5 and 10?).
Additional observations:
If I select bones one at a time and add to the selection by holding CMD, I can get between 5-10 bones in the dopesheet before they stop being added. Same if I make a selection box by holding CMD.
If I use CMD+A to select all bones, or ESC or SPACE to deselect, dopesheet doesn't change from the keyframes it's currently showing.