> It works, except when the UI thread is blocked, because messages are routed through the UI thread. This bug actually causes a ~40% slowdown in one of my proj

> It works, except when the UI thread is blocked, because messages are routed through the UI thread. This bug actually causes a ~40% slowdown in one of my projects, since I use sendMessage() in a Worker context to quickly yield to the browser. I didn't mention it, since I figured it may have been fairly obscure... I'm somewhat glad to hear that others are experiencing pain from it. It gives me some hope that it'll eventually be addressed!