QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

QML TextArea and ScrollView combination has a buggy result in after resizing

Here is the code snippet causes the issue:

What is the difference between model, modelData and required property?

I have a model that I assign to a delegate in qml, what is the difference in passing properties:

what diference in model, modelData, required property

I have a motel that I assign to a delegate in qml, what is the difference in passing properties: