Observer API not switching views

I'm gearing up to return to in-person gaming but I love a lot of the features of a VTT, especially the dynamic lighting. I fired up a one-shot and used the Observer API, and I invited a few friends over to try it out. We were able to create a dummy account, assign it as the observer, and cast it to a screen, and it was able to see what everyone saw. But when we rolled initiative, the screen would not snap to just what that character could see, as advertised. I have seen a bunch of people online talking about how much they love this API so I have a feeling there's some sort of embarrassing user error at work here, but the whole thing is pretty straightforward and I'm having trouble imagining what I could have done wrong. Could it possibly have been something to do with the updated dynamic lighting? Have other people experienced problems like this and found a workaround?

Observer just juggles who can control a character.  What do your settings look like?

Oh hey, you're the guy who made the script! Thanks for getting back so fast, and thanks for developing this. What settings specifically should I be looking at? The page settings? The game settings? How would you like me to share this?

Oh wait you probably mean the observer settings. They look like this:

Hmm.. "that should work" as they say.  Do you want to PM me an invite to your game and GM me and I'll come see if I can figure out what the issue is?

same issue here. I sent you a PM. tell me when available if you want to join the party and check what's wrong ??