75f798129a
A top level window with a window frame will have the has-border class, and hence a resize border, but child windows of that window shouldn't have their own resize borders. Ideally we wouldn't generate these non-client-area elements for child windows, but changing that requires more work, as it involves creating and destroying these elements on the fly if a window goes from being a child window to a top level and vice versa. Change-Id: I64ec27d87df952419284354b50420df8e48824d8 Reviewed-by: Piotr Wierciński <piotr.wiercinski@qt.io> (cherry picked from commit 9322f80c3cde118aec803e6b2c86197b1b5dbb67) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>