### What is the issue with the HTML Standard? After https://github.com/whatwg/html/pull/10404, we have a new replacement for "report the exception", the very-similarly-named "report an exception". However, its behavior an arguments are quite different. We need to look at [all the callers](https://dontcallmedom.github.io/webdex/r.html#report%20the%20exception%40%40html%25%25dfn) and update them to use the new version. However, it is probably best to do this after https://github.com/whatwg/webidl/issues/1423, because that change will remove many of the current callers. Checklist: - [x] https://github.com/WICG/observable/issues/212 - [x] https://github.com/w3c/compute-pressure/pull/316 - [ ] https://github.com/w3c/IntersectionObserver/pull/529 - [x] https://github.com/w3c/performance-timeline/pull/220 - [x] https://github.com/w3c/requestidlecallback/commit/c4604781337b7bbfad37802a95f23907fca50e9e (oops, I had edit access and did not realize it)