Block cfgs only possible in combination with vars

[JohnnyMcWeed]

What steps will reproduce the problem?

• Create a new block
• Add "cfgs"

What is the expected result?

• A block with editable "cfgs"

What do you get instead? (A Screenshot can help us a lot!)

• A block where "cfgs" cannot be edited

(If a single "vars" element is added, it seems to work)

Working Example:

<?php
/**
 * Alert Block.
 */
class AlertBlock extends PhpBlock
{
    ...
    /**
     * @inheritDoc
     */
    public function config()
    {
        return [
            'vars' => [
                [
                    'var' => 'test',
                    'label' => 'Test',
                    'type' => self::TYPE_TEXT
                ]
            ],
            'cfgs' => [
                 [
                     'var' => 'alertType',
                     'type' => self::TYPE_SELECT,
                     'label' => 'Alert Type',
                     'options' => BlockHelper::selectArrayOption([
                         'primary' => 'Primary',
                         'secondary' => 'Secondary',
                         'success' => 'Success',
                         'danger' => 'Danger',
                         'warning' => 'Warning',
                         'info' => 'Info',
                         'light' => 'Light',
                         'dark' => 'Dark',
                     ])
                 ],
                [
                    'var' => 'alertDismissable',
                    'type' => self::TYPE_CHECKBOX,
                    'label' => 'Dismissable Alert',
                ]
            ],
            'placeholders' => [
                 ['var' => 'alertContent', 'label' => 'Alert Content'],
            ],
        ];
    }
    ...
}

Not Working Example:

<?php
/**
 * Alert Block.
 */
class AlertBlock extends PhpBlock
{
    ...
    /**
     * @inheritDoc
     */
    public function config()
    {
        return [
            'cfgs' => [
                 [
                     'var' => 'alertType',
                     'type' => self::TYPE_SELECT,
                     'label' => 'Alert Type',
                     'options' => BlockHelper::selectArrayOption([
                         'primary' => 'Primary',
                         'secondary' => 'Secondary',
                         'success' => 'Success',
                         'danger' => 'Danger',
                         'warning' => 'Warning',
                         'info' => 'Info',
                         'light' => 'Light',
                         'dark' => 'Dark',
                     ])
                 ],
                [
                    'var' => 'alertDismissable',
                    'type' => self::TYPE_CHECKBOX,
                    'label' => 'Dismissable Alert',
                ]
            ],
            'placeholders' => [
                 ['var' => 'alertContent', 'label' => 'Alert Content'],
            ],
        ];
    }
    ...
}