QDialogs: Only top part of QTextEdit visible on Split view after focus change

Preconditions:

QDialog includes many text widgets: QTextEdit, QLineEdit, QDateTimeEdit, QSpinBox (vertical layout).
QDialog can be small, maximized or fullscreen.

Test steps:
1. Tap the QSpinBox at bottom of the dialog screen area.
--> split view is opened. QSpinBox is focused and visible on split view screen.
2. Change the focus to QDateTimeEdit (above the QSpinBox).
--> QDateTimeEdit is focused and visible on split view screen.
3. Change the focus to QLineEdit (above the QDateTimeEdit).
--> QLineEdit is focused and visible on split view screen.
4. Change the focus to QTextEdit (above the QLineEdit, top of the dialog screen area).

Expected result:
QTextEdit is focused and visible on split view screen. User can see the typed text line.

Actual result:
QTextEdit is focused but only top part of it is visible on split view screen area. When user types text the 'visible part of QTextEdit' is not enpanded --> user can see only first few lines of text.