Cannot Load Default Email Templates when creating a new Email Template

[blizam]

Preconditions

1. Mage 2.1.0
2. PHP 7

Steps to reproduce

1. Marketing > email templates > Add new Template >
2. Load default template > template = Magento Sale > New Order > Load Template

Expected result

1. Expect default new order tempalte to load

Actual result

1. Popup = Attention

The template did not load. Please review the log for details.

[2016-08-27 01:36:19] main.CRITICAL: Zend_Json_Exception: Decoding failed: Syntax error in /[magento root]/vendor/magento/zendframework1/library/Zend/Json.php:97
Stack trace:
#0 /[magento root]/vendor/magento/module-email/Model/Template.php(306): Zend_Json::decode('{"var formatted...')
#1 /[magento root]/vendor/magento/module-email/Model/Template.php(320): Magento\Email\Model\Template->_parseVariablesString('{"var formatted...')
#2 /[magento root]/vendor/magento/module-email/Controller/Adminhtml/Email/Template/DefaultTemplate.php(52): Magento\Email\Model\Template->getVariablesOptionArray(true)
#3 /[magento root]/vendor/magento/framework/App/Action/Action.php(102): Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate->execute()
#4 /[magento root]/vendor/magento/module-backend/App/AbstractAction.php(226): Magento\Framework\App\Action\Action->dispatch(Object(Magento\Framework\App\Request\Http))
#5 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(74): Magento\Backend\App\AbstractAction->dispatch(Object(Magento\Framework\App\Request\Http))
#6 /[magento root]/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor->___callParent('dispatch', Array)
#7 /[magento root]/vendor/magento/framework/Interception/Chain/Chain.php(63): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Email\C...', 'dispatch', Object(Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor), Array, 'adminAuthentica...')
#8 /[magento root]/vendor/magento/module-backend/App/Action/Plugin/Authentication.php(143): Magento\Framework\Interception\Chain\Chain->Magento\Framework\Interception\Chain{closure}(Object(Magento\Framework\App\Request\Http))
#9 /[magento root]/vendor/magento/framework/Interception/Chain/Chain.php(67): Magento\Backend\App\Action\Plugin\Authentication->aroundDispatch(Object(Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#10 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Email\C...', 'dispatch', Object(Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor), Array, 'adminMassaction...')
#11 /[magento root]/vendor/magento/module-backend/App/Action/Plugin/MassactionKey.php(33): Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor->Magento\Framework\Interception{closure}(Object(Magento\Framework\App\Request\Http))
#12 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(142): Magento\Backend\App\Action\Plugin\MassactionKey->aroundDispatch(Object(Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#13 /[magento root]/var/generation/Magento/Email/Controller/Adminhtml/Email/Template/DefaultTemplate/Interceptor.php(26): Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor->___callPlugins('dispatch', Array, Array)
#14 /[magento root]/vendor/magento/framework/App/FrontController.php(55): Magento\Email\Controller\Adminhtml\Email\Template\DefaultTemplate\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#15 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(74): Magento\Framework\App\FrontController->dispatch(Object(Magento\Framework\App\Request\Http))
#16 /[magento root]/vendor/magento/framework/Interception/Chain/Chain.php(70): Magento\Framework\App\FrontController\Interceptor->___callParent('dispatch', Array)
#17 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\Interception\Chain\Chain->invokeNext('Magento\Framewo...', 'dispatch', Object(Magento\Framework\App\FrontController\Interceptor), Array, 'install')
#18 /[magento root]/vendor/magento/framework/Module/Plugin/DbStatusValidator.php(69): Magento\Framework\App\FrontController\Interceptor->Magento\Framework\Interception{closure}(Object(Magento\Framework\App\Request\Http))
#19 /[magento root]/vendor/magento/framework/Interception/Interceptor.php(142): Magento\Framework\Module\Plugin\DbStatusValidator->aroundDispatch(Object(Magento\Framework\App\FrontController\Interceptor), Object(Closure), Object(Magento\Framework\App\Request\Http))
#20 /[magento root]/var/generation/Magento/Framework/App/FrontController/Interceptor.php(26): Magento\Framework\App\FrontController\Interceptor->___callPlugins('dispatch', Array, Array)
#21 /[magento root]/vendor/magento/framework/App/Http.php(135): Magento\Framework\App\FrontController\Interceptor->dispatch(Object(Magento\Framework\App\Request\Http))
#22 /[magento root]/vendor/magento/framework/App/Bootstrap.php(258): Magento\Framework\App\Http->launch()
#23 /[magento root]/index.php(39): Magento\Framework\App\Bootstrap->run(Object(Magento\Framework\App\Http))
#24 {main} [] []

[blizam]

Sorry this is a dupe of: #5101

Which is resolved here: #5116