We might be able to replay the app as a whole, but we don't currently support debugging workers that I know of. I know we don't support recording WebGL at the moment, and there's probably a couple similar recording limitations I can't think of off the top of my head.

We've got some articles linked in our docs that talk about how the recording/replay mechanism uses "effective determinism" that's close enough to the original to be accurate:

https://docs.replay.io/learn-more/contribute/how-replay-work...