Spine 4.2.16
Hey Timelines wont show up in the dopesheet in one particular project resetting filter fixes it.
1 min video with more information
Timelines wont show up in Dopesheet view
This happens in other project as well
- Edited
Sorry about that! 
Fixed in 4.2.17, available now.
This little hiccup aside, we've done some great fixes recently to reduce memory usage. A large project can use 75% or less of the memory it used to.