Force Fusion theme - fixes macOS UI bug

main.cpp

@@ -1,8 +1,10 @@
 #include "ui/mainwindow.h"
 #include <QApplication>
+#include <QStyleFactory>
 
 int main(int argc, char *argv[])
 {
+    QApplication::setStyle(QStyleFactory::create("Fusion"));
     QApplication a(argc, argv);
     MainWindow w;
     w.show();