Vue: Multiple vue instance bug

[douzi8]

Vue.js version

Vue.js v2.0.0-alpha.5

Reproduction Link

https://jsbin.com/xedizivigi/edit?html,js,console,output

Steps to reproduce

First read 'bar.car.log', then assign bar.car.log = 'baoma'

What is Expected?

foo object will not update

What is actually happening?

foo object will also be updated

[pespantelis]

Hi @douzi8,

I have checked your bin and the foo object remains the same as expected.

[simplesmiler]

Interesting, looks like a bug to me.

[ealves-pt]

It is working as expected, bar.car.log gets a new value assigned and foo.car.log is not changed.

Before assignment we have:

foo.car.log => 'benchi'
bar.car.log => 'benchi'

After assignment:

foo.car.log => 'benchi'
bar.car.log => 'baoma'

[simplesmiler]

@ealves-pt but update is still called for foo, which should not be happening.

[ealves-pt]

@simplesmiler hmmm indeed didn't noticed that. Interesting...

Edit: Just noticed that if we use a computed property on both components it works as expected.