Motion sensor not updating

What are you expecting to see i.e. what kind of Item are we talking about, what [state presentation] (if any) are you using with that? What states is it taking up, as shown in your events.log?

Astro binding provides good examples of this.
A sunrise state channel might give 06:30. That’s a static state, the linked Item will be 06:30 all day long.
A sunrise event channel however will trigger START at 06:29 and trigger END at 06:31 or something like. The rest of the time, it is just void.
They’re not interchangeable at all, as you can see.