[Fiber] Infinite loop when error is thrown in render()

[steadicat]

Do you want to request a feature or report a bug?
bug

What is the current behavior?
Using React 0.16 alpha 13 (and most other recent versions of 0.16, IIRC), whenever an error is thrown inside of render(), React (Fiber) goes into an infinite loop. Screenshot:

If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/84v837e9/).
Unfortunately I don’t have a minimal repro case yet. I just wanted to flag this before 0.16 goes into beta. I don't think there's anything we're doing that's special (no weird recursive componentDidUpdate calls or similar). I tried stepping within the loop and it's all inside the Fiber internals, no user code involved.

What is the expected behavior?
React throws an error and stops.

Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?
Repros with 0.16, works fine with React 0.15.

[gaearon]

Thanks for reporting! It's a known issue in the open source alphas of ReactDOM. We're tracking it in #9193 and will fix soon.