Abnormal behavior when access computed value and modify it at same reaction

[feibyte]

I have a Question:
Chrome 56, Mobx version 3.1.7

const store = observable({
  a: 3,
  b: 4,
  get sum() {
    return this.a + this.b;
  },
});
autorun(() => {
  console.log('sum is', store.sum);
  store.b = 5;
});
store.a = 6;

The above code print the result only once.

I doubt that there is a bug.

[andykog]

@fedeoo, nice catch! Working on it.

[mweststrate]

Released fix as 3.1.8.