QML TextInput doesn't scroll if writing preedit at the end of the line

To reproduce:

• have QML TextInput element with text almost to the end of the available width.
• continue writing to the end of the line as preedit text.

Expected:

• TextInput would scroll keep the whole preedit visible

Actual outcome:

• Preedit is appended but not visible, only committing text makes it visible.