Query params with arrays are turned into strings when route.refresh() is used

[kalanda]

Query params containing arrays are turned into strings when route.refresh() is called and another query param is changed at the same time.

I put here a link to a twiddle using ember2.9.0 and an animated gif to see the testing process.

The first button sets the filters param to an initial value of ['filter1', 'filter2'] and the value is well represented in the URL's query string.

The second button calls an action that just executes route.refresh() and the model()method of the route is receiving an array with ['filter1', 'filter2'] in the filtersparam.

The third button shows the issue by calling an action that first changes a different query param (otherParam) and after that, executes route.refresh() and the model()method of the route is receiving a string instead of an array with the value of filters.

https://ember-twiddle.com/0c3833a0ae05e1350f4e0e8cbd4f125c?openFiles=controllers.application.js%2C

[nathanhammond]

Known issue, duplicate of #14174

[Serabe]

Closing as duplicate. Thank you all!