Small QDialog: QComboBox position on split view changes after item list opened and closed

Preconditions:

Small QDialog includes a QComboBox.
Dialog position is center or top of the screen.
View is on portrait orientation.

Test steps:
1. Tap the text widget input field
-> split view is opened.
2. Tap the small arrow on QComboBox
-> item is opened.
3. Select some item.

Expected result:
Item list is closed. Text widget position on split view screen area has not changed.

Actual result:
Item list is closed. Text widget position on split view screen area has changed:

• if original position was center of screen, text widget has moved a bit upwards on split view
• if original position was top of screen, text widget has moved top of split view screen area