Vue route object gets freeze by vue's core

[furyscript]

Version

2.5.13

Reproduction link

https://github.com/samturrell/vue-breadcrumbs/tree/master/example

Steps to reproduce

I'm using this plugin https://github.com/samturrell/vue-breadcrumbs but have a problem by getting the route params using for breadcrumb.
The problem, as you can see on open issue samturrell/vue-breadcrumbs#1 , is that vue-router freeze the object and it's impossibile to manage params.
It's easy to reproduce, just install plugin and create two route with dynamic params. Links aren't replace when found :id (or something) but they keeps string literally.

You can find example in link

What is expected?

Get route params chain

What is actually happening?

Just explain into steps to reproduce

[yyx990803]

1. This is a 3rd party plugin issue.

2. Even if it's related to Vue, it should be reported to the vue-router repo.

3. The route object is an immutable mapping of the current URL. This is by design. You should never attempt to mutate the route object. Instead, trigger a navigation with $router.push.