When exiting a room where one was host, server sends a REMOVE_TEAM for the local team. It appears that this loop would not break in that case. Add a log message and a break. (I've hit a frozen frontend twice now)

#include <QApplication>

#include "mainform.h"

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWindow *mainWin = new MyWindow;
    mainWin->show();
    return app.exec();
}