Instead of repeatedly resetting of the static pointers after (or before) calling deleteLater(), use a unique_ptr with a custom deleter. Since we use deleteLater(), nothing will happen if one of those widgets does leak to the point where static objects are destroyed; we'd at most call deleteLater() at this point, which won't do anything (if we enqueue a DeferredDelete event at all, then it will never be processed). Task-number: QTBUG-135976 Change-Id: I36a4780093eafd064dcb1a72696c1d9b21483b77 Reviewed-by: Axel Spoerl <axel.spoerl@qt.io> (cherry picked from commit b50a2761e735208eeb62042ecfaba7a76e580454) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org> (cherry picked from commit c9ba8760deec4b2f5c245e9120d59b622b383ceb)