1. Create a QWebSocket
2. Connect a slot to the `textMessageReceived(const QString &)` signal
3. In the slot function, create a `QDialog` and call `exec()`
4. Instrument some connection and sending of a text message to the web socket.
5. Run the program

I saw the slot function reentered two additional times when run from c++, causing a total of 3 QDialogs to appear. The callstack shows Qt's `sendPostedEvents` being called from the QDialog's event loop which seems to be retriggering the socket signal events.

Changing the `textMessageReceived` slot connection to a `Qt::QueuedConnection` circumvents the bug.

In an extended version of this bug reproduction, instead of creating the `QDialog` in c++, we called a Python function to create the `QDialog` via PySide2. In this case many more windows were created until the program ran into some memory related crash.