I’m wondering if you’re trying to list multiple controls together incorrectly… If you can show us your surrounding code we can try and locate the error for you.
If I paste your code into an empty group it works just fine.
Empty Group:
{
"groups": [
PASTE YOUR CODE HERE
]
}
Your Code:
{
"title": "TextArea:",
"properties": [{
"title": "TextArea2",
"property": "textarea",
"textArea": {
"default": "Hello World",
"subtitle": "Subtitle"
}
}]
}
Result: