QMainWindow with many QWidgets: focused text input field is behind statuspane while split view is open

Preconditions:

Application includes QMainWindow with many QWidgets that supports text input. Tested with QLineEdit (top of screen), QPlainTextEdit, QSpinBox, QDateTimeEdit (bottom of screen),
Application is on landscape orientation and QWidgets are positioned to center or top of screen.
Note: error can also be reproduced on portrait orientation if QWidgets are fulfilling the whole application screen.

Test steps:
1. Tap the QSpinBox
--> split view is opened.
2. Move focus to QPlainTextEdit that is above the QSpinBox on split view screen.

Expected result:
Focused line is visible on split view screen.

Actual result:
Focused line cannot be seen, it's 'behind' the status pane area.