Following the changes in 266104d0a1, this commit gathers the leave-then-join logic and handles it in one fell swoop when joining from the spectator area. This means that the timer will start, and when it runs out, the player leaves the current arena (if any), and then joins.
There should be no issues with overlapping timers or anything like that, since the lookup happens when the time is up, not before the timer is started.
MobArena

MobArena is an arena-style minigame for Spigot-based Minecraft servers
Getting Started
If you don't want to compile the plugin yourself, grab a release artifact from one of these two sites:
The wiki here on Github should have all the information you need to get started using the plugin.
Getting Help
If you run into problems or need help with something, feel free to hop on the MobArena Discord server or IRC channel to have a chat:
- Discord: Instant Invite
- IRC (#mobarena @ EsperNet): KiwiIRC Web Client
Remember, though, that these communication channels are idle chat, which means you likely won't get a response immediately. It could take anything from a couple of seconds to a day, but your message will be seen.
Contributing
Found a bug, got a suggestion, or want to dig into the code base? There are many ways to contribute to the project!
Get started here: Contributing