According to the documentation of Qt::FramelessWindowHint: "Produces a borderless window. The user cannot move or resize a borderless window via the window system. "

In the new Qt 6.3 release, I start the Window Flags Example, if I check the Frameless window checkbox, the window becomes frameless as expected, but it can also be resized.

This behaviour does not match the documentation. Is it a planned feature and can be relied upon or is it an accident and will be removed?