[C8] Variable not triggering rule machine

[hubitrep]

@a.mcdear

If Hubitat treats them identically

It does not. The trigger will happen exactly once and then not again, because the required expression will be false thereafter.

Required Expression is False, but Trigger still runs the Actions

There is some subtlety that arises when the trigger and the Required Expression are looking at the same device event, as in this case. RM should handle this case correctly, barring some bug no one has reported and I haven't seen. In this case, both the trigger and the Required Expression use the same event handler (stHandlerA), and that subscription does not go away when the Required Expression is false (because it's needed to know when the Required Expression becomes true). So that handler…