The problem you are referring to is with using the Monitor object to communicate via the UNO Q board's USB CDC serial port, as we discussed in your other topic:
As is explained by the documentation you referenced, the "UNO Q Board" core's Serial object being associated with the UART interface of the UNO Q's STM32U585 microcontroller is an intentional design by the Arduino developers:
https://docs.arduino.cc/tutorials/uno-q/user-manual/#from-serial-to-monitor
It is important to keep the two distinct subjects separate in your mind:
- A bug that causes the Arduino App Lab's Serial Monitor to not receive data when running in non-SBC mode on a Windows machine.
- The intentional design of the
Serialobject.
The former will be resolved in the next release of Arduino App Lab. The latter is something you will always need to consider when developing sketches for the UNO Q.