[Pacemaker] Why are some periodic state transitions logged as warnings?

[Stefan Förster]

* Stefan Förster <cite+pacemaker at incertum.net>:
> crmd: [3856]: WARN: do_state_transition: Progressed to state
> S_POLICY_ENGINE after C_TIMER_POPPED
> 
> Why is this logged as a warning?

Clarifying: Logged as a "warning", and not as a merely informational
message?