Store not found when adding a ? to site URL.

Preconditions

1. Magento 2.2.0
2. PHP 7.0.25
3. MariaDB 10.1.29

Steps to reproduce

1. Turn on "Add storecode to URL's" in "Configuration > General > Web"
2. Navigate in browser to "BASE_URL/?"
3. Error thrown

Expected result

1. With just a ? after the BASE_URL site should function normally

Actual result

1. Store throws error.

Additional information

1 exception(s): Exception #0 (Magento\Framework\Exception\NoSuchEntityException): Requested store is not found Exception #0 (Magento\Framework\Exception\NoSuchEntityException): Requested store is not found #0 /Users/*/Development/*/vendor/magento/module-store/Model/StoreManager.php(168): Magento\Store\Model\StoreRepository->get('') #1 /Users/*/Development/*/generated/code/Magento/Store/Model/StoreManagerInterface/Proxy.php(119): Magento\Store\Model\StoreManager->getStore('') #2 /Users/*/Development/*/vendor/magento/module-store/Model/Resolver/Store.php(29): Magento\Store\Model\StoreManagerInterface\Proxy->getStore(NULL) #3 /Users/*/Development/*/vendor/magento/framework/App/Config/ScopeCodeResolver.php(49): Magento\Store\Model\Resolver\Store->getScope(NULL) #4 /Users/*/Development/*/vendor/magento/framework/App/Config.php(69): Magento\Framework\App\Config\ScopeCodeResolver->resolve('stores', NULL) #5 /Users/*/Development/*/vendor/magento/framework/App/MutableScopeConfig.php(36): Magento\Framework\App\Config->getValue('web/secure/base...', 'stores', NULL) #6 /Users/*/Development/*/vendor/magento/module-store/Model/Store.php(797): Magento\Framework\App\MutableScopeConfig->getValue('web/secure/base...', 'store') #7 /Users/*/Development/*/vendor/magento/module-store/Model/Store.php(601): Magento\Store\Model\Store->isCurrentlySecure() #8 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Store\Model\Store->getBaseUrl() #9 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Store\Model\Store\Interceptor->___callParent('getBaseUrl', Array) #10 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Store\Model\Store\Interceptor->Magento\Framework\Interception\{closure}() #11 /Users/*/Development/*/generated/code/Magento/Store/Model/Store/Interceptor.php(26): Magento\Store\Model\Store\Interceptor->___callPlugins('getBaseUrl', Array, Array) #12 /Users/*/Development/*/vendor/magento/module-store/Model/Store.php(1299): Magento\Store\Model\Store\Interceptor->getBaseUrl() #13 /Users/*/Development/*/vendor/magento/module-store/Model/StoreCookieManager.php(59): Magento\Store\Model\Store->getStorePath() #14 /Users/*/Development/*/vendor/magento/module-store/Model/Plugin/StoreCookie.php(90): Magento\Store\Model\StoreCookieManager->setStoreCookie(Object(Magento\Store\Model\Store\Interceptor)) #15 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(121): Magento\Store\Model\Plugin\StoreCookie->beforeDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Magento\Framework\App\Request\Http)) #16 /Users/*/Development/*/vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php(69): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #17 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(135): Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http)) #18 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception\{closure}(Object(Magento\Framework\App\Request\Http)) #19 /Users/*/Development/*/generated/code/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array) #20 /Users/*/Development/*/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http)) #21 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->launch() #22 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent('launch', Array) #23 /Users/*/Development/*/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}() #24 /Users/*/Development/*/generated/code/Magento/Framework/App/Http/Interceptor.php(26): Magento\Framework\App\Http\Interceptor->___callPlugins('launch', Array, Array) #25 /Users/*/Development/*/vendor/magento/framework/App/Bootstrap.php(256): Magento\Framework\App\Http\Interceptor->launch() #26 /Users/*/Development/*/pub/index.php(37): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http\Interceptor)) #27 /Users/*/.composer/vendor/weprovide/valet-plus/server.php(113): require('/Users/*/De...') #28 {main}

[magento-engcom-team]

@Cinawork, thank you for your report.
We've created internal ticket(s) MAGETWO-84568 to track progress on the issue.

[osrecio]

Working on it