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Bug
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    Resolution: Done
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P2: Important
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    5.12.4, 5.13.0
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    None
 
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        9de5e8fc4bd5db73531d1590978006d3bcaa4cc4 (qt/qtwayland/5.13)
 
Qt::ImCursorRectangle is inaccurate,should consider frameMargins.
    if (queries & Qt::ImCursorRectangle) {
#ifdef Q_OS_SYLIXOS
        // Here should be added to the offset of the margins
        auto m = static_cast<QWaylandWindow *>(QGuiApplication::focusWindow()->handle())->frameMargins();
        const QRect &cRect = event.value(Qt::ImCursorRectangle).toRect().translated(m.left(), m.top());
#else
        const QRect &cRect = event.value(Qt::ImCursorRectangle).toRect();
#endif
        const QRect &tRect = QGuiApplication::inputMethod()->inputItemTransform().mapRect(cRect);
        set_cursor_rectangle(tRect.x(), tRect.y(), tRect.width(), tRect.height());
    }
Code in: qt5\qtwayland\src\client\qwaylandinputcontext.cpp