Multi-Store: "Store View" sort order values are not reflected in the admin or front-end store-switcher

[duffner]

Preconditions

1. Magento 2.2.2
2. PHP 7.0

Steps to reproduce

1. Create one website, with three Store Groups Each with 1 store
2. Within the Store view 1, set priority of 0, Store View 2, priority of 10, Store View 3, priority of 20
3. Save
4. Reviewing admin grid of stores, the sort order does not change.
5. Reviewing store switcher on front-end, sort order does not change

Expected result

1. When changing the sort order of stores in the admin, their new sort order should be reflected on the admin grid and main store switcher.

Actual result

1. Nothing changes

This feature works as expected in Magento 1.14.x and 1.9.x. The business case, I want to be able to arrange my stores in the store switcher drop down by popularity or other arbitrary value. This is not possible as the sort order value does nothing. Additionally, if I have 100 stores, I want to be able to sort them in a way that makes sense in the admin.

[duffner]

An additional bug relating to Enterprise Support Ticket #03228684:

When switching stores, if a url key for a category is not valid on the second store the native store switcher places user onto a 404 page. This issue also exists in plain 2.2.2 with no customizations.

[magento-engcom-team]

@duffner, thank you for your report.
We've acknowledged the issue and added to our backlog.

[duffner]

@vasilii-b , I'm adding you to this ticket as you were already in the Store Switcher Logic for a separate ticket and this is the last piece to allowing the store switcher to work as expected for Magento 2 merchants. I was curious if you had any interest in taking this on as well.

[vasilii-b]

For the admin panel, I've found responsible method joinGroupAndStore from Magento\Store\Model\ResourceModel\Website\Collection.

magento2/app/code/Magento/Store/Model/ResourceModel/Website/Collection.php

Lines 125 to 134 in cc85cbe

	/**
	* Join group and store info from appropriate tables.
	* Defines new _idFiledName as 'website_group_store' bc for
	* one website can be more then one row in collection.
	* Sets extra combined ordering by group's name, defined
	* sort ordering and store's name.
	*
	* @return $this
	*/
	public function joinGroupAndStore()

But I do not understand why there is the need to sort by Group Name, Store View Name and Store View Order.
Can anyone form Magento Team (as the Annotation says these order lines were added by team) suggest why it's so ? @magento-engcom-team Where we can read more about it, the reason of doing so ?

Thank you!