Seems like a small detail, but in other maps I've not been so successful. I've created rain but it still fell inside the tunnels. Liberty City was one such map, Los Injuros was another. Maybe because they're third party or because I had used the old world editor instead of the new one. I never tested the old world editor with WCU, but I tested the new world editor with WCU, and after creating rain in my own custom level-- it will stop the rain upon driving through the tunnels. Good news that this has been perfected. I don't know if it's new to v0.21 but it's the first time I've noticed it. Good job devs.
hmm, i haven't looked into it, but i wonder if it's controlled by the condition that also changes the lighting in the tunnels.
No such thing as a wrong place. I'm happy to socialize on my post with anyone, during lockdown in my house. LOL ;-)