QTextEdit size after layout switch & closing split view on QMainWindow

Preconditions:

Application includes QMainWindow with one QTextEdit.
QTextEdit height is

• not fixed
• same as application screen height.
  Application is on portrait orientation.
  Split view is open with qwerty keyboard.

Test steps:
1. Switch the view orientation from portrait to landscape
--> split view is open landscape mode and QTextEdit is correctly scaled so that it fits into split view screen area.
2. Close the split view

Expected result:
QTextEdit size should be same as application screen height (on landscape mode).

Actual result:
QTextEdit height is same as it was in split view screen area on landscape mode.