`Thread.errors` not behaving as expected

Uncaught errors in a worker are not communicated to the `Thread.errors` observable on the main thread. Here is an existing threads.js example on Codesandbox, modified to throw an error in a worker and subscribe to errors on the main thread:

https://codesandbox.io/s/threadsjs-particles-forked-tgqpv?file=/src/worker.js

see line 16 of `worker.js` for the thrown error
see line 57 of `index.js` for the `Thread.errors` observable, which isn't receiving events.