With Spirit Wave 1.0.23:
I defined an alarm which is supposed to protect me against using an empty battery (accidentally).
With a 6S battery and using Hobbywing V4 telemetry, I defined it like this:
If ESC-battery voltage < 24.8 V on startup --> Alarm
This does not work (test with battery discharged to 22V), when I power up the system normally (no matter whether wave first or heli first).
But the Alarm occurs, when I enter the browser and then quit the browser (which seems some kind of system restart).
Probably there is some kind of timing issue, that ESC telemetry initialization comes later than evaluation of "on startup" condition.