Hey Joe,
I just attempted to reproduce this in 4.13 P3 and got nowhere. Here’s what I did; you can tell me if I need to update my repro.
- Made a Spawner BP class that spawns exploding spheres at a rate of 1/sec.
- Made a child of that Spawner BP (Spawner_Child) that simply overrides the rate to 5/sec.
- Just the child is in the level.
- Restart editor.
- Made edits to player, compile, save, restart editor.
- Add/remove the BP from the level, restart editor
- Add many copies of child to level, restart editor
Nothing reproduces a failure back to 1 spawn per second.
Also, UE-22557 is listed as fixed as of 4.13, not 4.12. It looks like we had a stack of fixes for BPs go in within that timeframe.