Shipping method subscriber callbacks are called twice

[danslo]

In checkout, we can subscribe to shippingAddress observable. Something like:

quote.shippingMethod.subscribe(function(address) {
    // do something interesting with shipping method
});

However, this callback is executed twice when selecting a shipping method. This can cause issues with double AJAX calls for custom components.

Steps to reproduce

1. Create a component that subscribes to shippingMethod observable as seen above.
2. Go to the checkout and click on a shipping method.

Expected result

1. Code is executed once.

Actual result

1. Code is executed twice.

[veloraven]

@danslo thank you for your report.
Please, provide the used version. If the problem is actual for a specific tag, please, specify it and be sure that the latest update was used.

[danslo]

@veloraven

This is on Magento 2.1.0.

[danslo]

@veloraven I have submitted a pull request which fixes this issue.

[viktym]

Hi @danslo
I’m closing this issue because it is a duplicate #5928
Thanks for contributing