BaseFieldGroup: unintentional re-render of FormContext consumers due to changed subContext object reference.

[dinony]

BaseFieldGroup creates a new object in the render method, which updates FormContext consumers every time.

const p = {x: 2, y: 3}

Object.is({...p}, {...p})
// false

More infos in the Context API.

Maybe issue 57 also relates to this issue.

[maschino]

Should be fixed with release 3.0.0, I'll keep an eye on it.