QGraphicsView: Split view is not correctly updated after layout switch for embedded QWidget on top-right position

Preconditions:

QGraphicsView with srollbars includes one embedded QLineEdit. QLinEdit position on the screen is top-right corner.
Split view is open on landscape mode.

Test steps:
1. Switch the layout to portrait mode.

Expected result:
Split view is correctly opened to portrait mode.

Actual result:
Background appliation is visible on the lower part of the split view screen area.
This can also be reproduced if the use case is started from portrait mode. Then you just have to change the layout to lanscape and back to portrait mode.