Estimate Shipping and Tax Form not works due to js error in collapsible.js [proposed fix]

[Dart18]

The shipping and estimate tax form don't display the form with country, city, postcode fields.
The form is in the dom, but hidden.
The Cannot read property 'it/checkout/cart/block-shipping' of null javascript error appears in the console.

Preconditions

1. Magento 2.1.3
2. Mysql 5.7.17
3. PHP 5.6.29-1+deb.sury.org~xenial+1 (cli)
   Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
   with Xdebug v2.5.0, Copyright (c) 2002-2016, by Derick Rethans
4. Data imported from Magento 1.9.0.1 to 2.1.1, upgraded to 2.1.2 and after to 2.1.3
5. Shipping method: Table Rates
6. The site does not seems to be affected from Website Specific Shipping Methods are not working after upgrade 2.1.2=>2.1.3 #7840 in the checkout step 1 and 2, but I can not exclude a side effect on the estimation block.

Steps to reproduce

1. Set a base unsecure url in the format www.domain.tld
2. Cart with one item, simple product
3. No shipping promotions
4. Click on Estimate Shipping and Tax and nothing happens.

Expected result

1. Click on Estimate Shipping and Tax should display the form.

Actual result

1. The estimation form in the sidebar is hidden and appears the following error in console:

jquery-migrate.js:21 JQMIGRATE: Logging is active
jquery.storageapi.min.js:2 Uncaught TypeError: Cannot read property 'it%2Fcheckout%2Fcart%2Fblock-shipping' of null
    at Object.t (http://plutone.local.host/develflowershop/www.develflowershop…84959354/frontend/Magento/luma/it_IT/jquery/jquery.storageapi.min.js:2:721)
    at Object._callMethod (http://plutone.local.host/develflowershop/www.develflowershop…4959354/frontend/Magento/luma/it_IT/jquery/jquery.storageapi.min.js:2:4103)
    at Object.get (http://plutone.local.host/develflowershop/www.develflowershop…4959354/frontend/Magento/luma/it_IT/jquery/jquery.storageapi.min.js:2:4145)
    at $.(anonymous function).(anonymous function)._processState (http://plutone.local.host/develflowershop/www.develflowershop…c/version1484959354/frontend/Magento/luma/it_IT/mage/collapsible.js:116:42)
    at $.(anonymous function).(anonymous function)._processState (http://plutone.local.host/develflowershop/www.develflowershop…c/version1484959354/frontend/Magento/luma/it_IT/jquery/jquery-ui.js:402:25)
    at $.(anonymous function).(anonymous function)._create (http://plutone.local.host/develflowershop/www.develflowershop…ic/version1484959354/frontend/Magento/luma/it_IT/mage/collapsible.js:53:18)
    at $.(anonymous function).(anonymous function)._create (http://plutone.local.host/develflowershop/www.develflowershop…c/version1484959354/frontend/Magento/luma/it_IT/jquery/jquery-ui.js:402:25)
    at $.(anonymous function).(anonymous function)._createWidget (http://plutone.local.host/develflowershop/www.develflowershop…ic/version1484959354/frontend/Magento/luma/it_IT/jquery/jquery-ui.js:561:8)
    at new $.(anonymous function).(anonymous function) (http://plutone.local.host/develflowershop/www.develflowershop…ic/version1484959354/frontend/Magento/luma/it_IT/jquery/jquery-ui.js:363:9)
    at $.(anonymous function).(anonymous function) (http://plutone.local.host/develflowershop/www.develflowershop…c/version1484959354/frontend/Magento/luma/it_IT/jquery/jquery-ui.js:357:11)
t @ jquery.storageapi.min.js:2
_callMethod @ jquery.storageapi.min.js:2
get @ jquery.storageapi.min.js:2
_processState @ collapsible.js:116
(anonymous) @ jquery-ui.js:402
_create @ collapsible.js:53
(anonymous) @ jquery-ui.js:402
_createWidget @ jquery-ui.js:561
$.(anonymous function).(anonymous function) @ jquery-ui.js:363
$.(anonymous function).(anonymous function) @ jquery-ui.js:357
(anonymous) @ main.js:30
execCb @ require.js:1650
check @ require.js:866
enable @ require.js:1143
init @ require.js:774
(anonymous) @ require.js:1416
setTimeout (async)
(anonymous) @ require.js:1755
localRequire @ require.js:1405
window.require @ mixins.js:239
init @ main.js:23
(anonymous) @ main.js:83
_.each._.forEach @ underscore.js:150
(anonymous) @ main.js:72
apply @ main.js:69
fire @ jquery.js:3099
add @ jquery.js:3145
jQuery.fn.ready @ jquery.js:3379
jQuery.fn.init @ jquery.js:2819
jQuery.fn.init @ jquery-migrate.js:225
jQuery @ jquery.js:75
(anonymous) @ bootstrap.js:19
execCb @ require.js:1650
check @ require.js:866
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
enable @ require.js:1143
init @ require.js:774
(anonymous) @ require.js:991
(anonymous) @ require.js:132
(anonymous) @ mixins.js:106
execCb @ require.js:1650
check @ require.js:866
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
enable @ require.js:1143
init @ require.js:774
(anonymous) @ require.js:991
(anonymous) @ require.js:132
(anonymous) @ mixins.js:106
execCb @ require.js:1650
check @ require.js:866
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
enable @ require.js:1143
init @ require.js:774
(anonymous) @ require.js:991
(anonymous) @ require.js:132
(anonymous) @ mixins.js:106
execCb @ require.js:1650
check @ require.js:866
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
(anonymous) @ require.js:1113
(anonymous) @ require.js:132
(anonymous) @ require.js:1156
each @ require.js:57
emit @ require.js:1155
check @ require.js:917
enable @ require.js:1143
init @ require.js:774
(anonymous) @ require.js:991
(anonymous) @ require.js:132
runCallbacks @ domReady.js:24
callReady @ domReady.js:35
pageLoaded @ domReady.js:50

I'm working on a site ready to go live. So any suggestion is very appreciate.
Thanks in advance.

[Dart18]

Some additional informations.
I'm in developer mode.
The current theme is Luma.
All cache types are enabled.
All custom modules are disabled.
I tried cleaning browser cache and local storage data without any effect;
I tried also

php bin/magento setup:static-content:deploy -d;
php bin/magento setup:static-content:deploy -d it_IT;

, I emptied the cache from the backend, without success.
My website has two stores, the default uses en_US locale, the second uses it_IT locale provided by Magento2 Italian Language Pack (It_IT) and installed via composer.

Switch between languages does not change the resut: the error is the same.
Any suggestion? There is something else that I forget to try?
Thanks

[Dart18]

Switching on YES the option:
Stores -> Configuration -> General -> Web -> Url Options -> Add Store Code to Urls, the error changes in:

jquery.storageapi.min.js:2 Uncaught TypeError: Cannot read property 'it%2Fita%2Fcheckout%2Fcart%2Fblock-shipping' of null
....

The string 'it/ita/checkout/cart/block-shipping now includes the store code.
I'm not sure, but the "it" at the beginning seems to be the TLD of my website (.it)

[Dart18]

Proposed FIX:

In

<document root>/lib/web/mage/collapsible.js

at line 103 change the research value '.' with /\./g to perform the replace globally.

The result should be the following:

Original collapsible.js:

...
_processState: function () {
            var anchor = window.location.hash,
                isValid = $.mage.isValidSelector(anchor),
                urlPath = window.location.pathname.replace('.', '');
...

Modified collapsible.js:

...
_processState: function () {
            var anchor = window.location.hash,
                isValid = $.mage.isValidSelector(anchor),
                urlPath = window.location.pathname.replace(/\./g,'');
...

There is a single occurrence of 'window.location.pathname.replace' in all Magento 2.1.3 CE.
After this single change the estimation shipping and tax form appears and works.
Please check my work and, if approved, merge it as soon as possible.
Thanks

P.S.:
People who want to try this fix manually, have to clear static files cache after editing the file.

[Dart18]

This issue affects also CE 2.1.5, CE 2.1.6 and CE 2.1.7

[katmoon]

The error also reproduces on 2.0.9