Dynamic lighting problems-DM on another page than players

Hello everyone, I didn't find something similar but I'm not a native english-speaker so maybe I didn't use the correct wording in the search tab... When I play on a game with dynamic lighting and walls made by myself, it works correctly when I am on the same page of my players, but when I change page (for exemple, because the group splitted) the players who stayed on a page without me can see everything, without any dynamic lighting settings, walls and so on. Does anyone have the same problem, maybe I did something wrong?

I wasn't able to duplicate this behavior.  Are you using Updated Dynamic Lighting or Legacy Dynamic Lighting?  Are you using any API scripts?

Assuming Updated Dynamic Lighting, there is a known bug where changing lighting settings for a particular page erroneously affects what people see on other pages. If your players are on page "A" with dynamic lighting enabled and you turn off dynamic lighting on page "B".  Your players on page A would also suddenly have dynamic lighting turn off for them and they will see the whole map until they reload the page or are moved to a different map and back. This doesn't actually change the settings for page "B", but it will temporarily hide or reveal things. Any chance this is what happened?

I am with Updated Dynamic Lighting. Thank you Sean, I think it was the problem, because it looks like exactly the problem that I had. I will check this when I will be at home with several computers, because I don't know how to "recreate" the same conditions that when I was with the whole group, with some with me on Page "B" while some other stayed on page "A".