When we change the horizontalAlignment property of a TextEdit (or TextArea) that uses a custom cursorDelegate, the cursor delegate does not refresh – it stays at its previous position while the text content updates correctly. This problem does not occur when the default cursor is used

Conversely, altering the verticalAlignment property causes the text content to remain stale, even though the custom cursorDelegate is refreshed. If we use the default cursor instead, it fails to update.

Here a small QML application exhibiting these issues