UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.146 Safari/537.36

Steps to reproduce the problem:
Run this code, perhaps in the dev console:

```
const obj = Object.assign(
  {},
  {
    foo: function bar() {},
  },
);

console.log("before:", Object.values(obj));
Object.keys(obj);
console.log("after:", Object.values(obj));
```

What is the expected behavior?
Should print something like:

```
before: [ƒ]
after: [ƒ]
```

What went wrong?
On Chrome Version 65.0.3325.146 (Official Build) (64-bit) (Mac, Windows or Linux) it prints:

```
before: [ƒ]
after: "foo"
```

So something object keys and values appear to get mixed up.

Did this work before? Yes 64

Chrome version: 65.0.3325.146  Channel: stable
OS Version: OS X 10.12.6
Flash Version: 

When using Object.entries the same problem occurs, however when logging the object to the console it seems fine.

The problem doesn't happen when using a number or string instead of a function as object value, and only appears to happen when using Object.assign.