Comment 3 for bug 1880446

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Be (be.ing) wrote :

I cannot reproduce this on Fedora 32. Maybe it only happens on macOS?

From the backtrace, the crashing code is:
const auto screenSize = widget.windowHandle()->screen()->size();

It seems QWidget::windowHandle is returning a null pointer so the call to QWindow::screen is crashing. I do not know why QWidgett::windowHandle would return a null pointer. Does it make a difference whether Mixxx is full screen or not?