Qt WebAssembly using QDialog bug

[Behard]

I tested Qt WebAssembly using QDialog on Qt 6.8.2
Adding the compilation condition 'QMAKE_LFLAGS+=- saSYNCIFY - Os' allows the use of QDialog
However, it was discovered that there are issues with QComboBox and QMenu
The QComboBox in the QDialog window can pop up options, but cannot select them. QComboBox in the main window, QMenu is being used normally.
The QMenu of QDialog window has the same issue.