QML TextEdit doesn't display text at all when MarkdownText format is set and its "text" property is being accessed

I found a VERY odd bug today. Simply running the following example, the text of the TextEdit will not show up.

import QtQuick
import QtQuick.Controls

ApplicationWindow {
    id: root
    width: 400
    height: 400
    visible: true    
    
    TextEdit {
        x: 20
        text: "Hello"
        textFormat: Text.MarkdownText        
        onTextChanged: {
            console.log(text);
        }
    }
}
 

If we remove the "onTextChanged" slot, then it seems to work, oddly enough. If we change  "MarkdownText" to "PlainText" it also works.

In my own app I get this bug without using "onTextChanged" but I still couldn't reproduce it. Unfortunately, this bug doesn't allow me to use the built-in Markdown text in my delegate for a new app I'm working on.

If I manage to reproduce the case where the bug occurs without onTextChanged I'll report it in the comments.