Players can see vanished users with commands like /balance .

For example; lets say my tag (permission tag) is Owner and if players use the command "/bal owner" they can see my balance. If i'm offline and when they use "/bal owner" result will be nothing. But if they use the command while i'm online and vanished they can see result.

Upon testing, all appears to be working on the current versions of Essentials. This is probably no longer an issue.