When using a QMdiArea and the scrollbars are set and the option DontMaximizeSubWindowOnActivation is set as follows:

mdiArea->setOption(QMdiArea::DontMaximizeSubWindowOnActivation);
mdiArea->setHorizontalScrollBarPolicy(Qt::ScrollBarAsNeeded);
mdiArea->setVerticalScrollBarPolicy(Qt::ScrollBarAsNeeded);

it is possible to scroll away the maximized sub window.

Steps to reproduce (using the attached example):

• Compile an run the example.
• You will see a normal sub window in front of a maximized sub window.
• Move that window to the top of the mdiArea and beyond. (the ScrollBar Appears)
• Now use that scrollbar to scroll to the top and (the maximized sub window moves down) .

This is not the expected behavior because the window in the back is maximized and should not move down.