1. What happened
When trying to rename a state in Playmayker Editor window, the state loses focus after first character btn is pressed (from keyboard). So it is possible to give only 1-character-long names.

This works fine in 5.6.0p4

Also, this is not reproducible on Lights GO.

2. How we can reproduce it using the example you attached
- Open scene 1
- Select a GO, which is not a light
- Select a state in Playmaker window
- Try renaming a state
---> Focus goes away.