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?
I cannot reproduce this on Fedora 32. Maybe it only happens on macOS?
From the backtrace, the crashing code is: windowHandle( )->screen( )->size( );
const auto screenSize = widget.
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?