It's a bug. It is currently being investigated and worked on, but it has been around for a while. It's annoying as it can take multiple attempts to get the reversion to revert. Here is a little scriptlet by The Aaron that will alert you as to which engine is running at startup: log(`API Restarted: ${typeof $20 !== "undefined" ? "EXPERIMENTAL" : "PRODUCTION"}`); on('ready',()=>sendChat('API Restart', `/w gm <div><b>Server: <code>${typeof $20 !== "undefined" ? "EXPERIMENTAL" : "PRODUCTION"}<code></b></div>`)); It will send a whispered message to Chat, as well as put it in the API log.