Vue.js version

1.0.21

Reproduction Link

http://codepen.io/pkawiak/pen/grezPW?editors=1111

Steps to reproduce

Click model.log and model.log() buttons and observe console. Replace model by clicking Replace Model button and repeat clicking model.log and model.log() buttons.

What is Expected?

1. Click model.log(): Model 1 message appears in console.
2. Click model.log: Model 1 message appears in console.
3. Click Replace Model: model is replaced.
4. Click model.log(): Model 2 message appears in the console.
5. Click model.log: Model 2 message appears in the console.

What is actually happening?

1. Click model.log(): Model 1 message appears in console.
2. Click model.log: Model 1 message appears in console.
3. Click Replace Model: model is replaced.
4. Click model.log(): Model 2 message appears in the console.
5. Click model.log: Model 1 message appears in the console.