Missing characters in QML TextInput when using Markdown rendering

Hi,

I'm building a chat application (https://invent.kde.org/network/neochat) and the text editing part is using a QML TextArea with `textFormat: TextEdit.MarkdownText`. Composing text works fine but when accessing the text property to send the message some characters are missing.

For example, the text displayed is:

```
Let's try to write a long message re ijio https://invent.kde.org/network/neochat/-/commit/9c75deee8c0fa3c8c33f470b3daa8a4c8663d68 lorem
```

but the text when accessing the text property is:

```
Let's try to write a long message re ijio
https://invent.kde.org/network/neochat/-/commit/9c75deee8c0fa3c8c33f470b3daa
a4c8663d68 lorem
```

The markdown editor is hard wrapping the text and more important break works and remove character in the middle of a long text (see 8 who disappeared between 3daa and a4c8).

This is, unfortunately, a deal-breaker for me and I will need to fall back to plain text editing for my application until this is fixed