It should cache for an hour, I think (based on a quick look at nodebb package manager code). So yes - you have to wait a bit before the nbbpm refreshes. You can just install the updated version manually by using npm install <package name> from the command line in NodeBB folder.
User deleted account, still logged in as guest?
If I delete my account and I'm a moderator, is it possible for me if I am still logged in to still be able to chat with someone?
@trevor I think they recently implemented that when a user is deleted/banned, that their socket get closed. Or words to that effect. Don't quote me on that though.