Debugger works when no serial routines are used. When it encounters a serial function, it will get stuck inside this serial function. When in the example below the breakpoint is hit and I press F5 (continue) it will reach the breakpoint again (after it processed the loop). I can press F5 again and again and it will work I even see output on the serial monitor. As soon as I press F10 (step over) once and immediately after that press F5 or continue with F10 the program will get stuck on the Serial.println
The same example works fine in Visual Studio Code with Platformio and debugging. 
Sometimes after this problem it's impossible to retry build/upload/debug because an error is displayed that no upload tool is available and I have to restart Visual Studio and/or I have to power down the ESP32 devkit and restart it again.


Example code, breakpoint is at the first line inside loop:

void loop() {
  digitalWrite( 2, HIGH);
  delay( delayTime );
  digitalWrite( 0, HIGH);
  delay( delayTime );
  digitalWrite( 4, HIGH);
  delay( delayTime );
  digitalWrite( 2, LOW);
  delay( delayTime );
  digitalWrite( 0, LOW);
  delay( delayTime );
  digitalWrite( 4, LOW);
  delay( delayTime );
  Serial.println("TSP - This is main.\n");
}


Debugger stops here and can't continue:

void uartWriteBuf(uart_t* uart, const uint8_t * data, size_t len)
{
    if(uart == NULL || data == NULL || !len) {
        return;
    }

    UART_MUTEX_LOCK();
    uart_write_bytes(uart->num, data, len);
    UART_MUTEX_UNLOCK();
}

Yes, it does even when I set the serial monitor to COM1 or something else. I'm a professional C++ / Assembler programmer for over 40 years and I even dream in Visual Studio C++ 😊, so believe me I’ve tried everything I can to solve it.
I've also had errors like core 1 of the ESP crashed, or seen unhandled exception errors which corrupt the complete Visual Studio/Visual Micro in such a way that I have to restart Visual Studio. The Version I’m working with is 2022 with the latest version of Visual Micro. I’m working in a Virtual Machine with the following specs:

-      VMWare Workstation 15.5.7 build-17171714.
-      8 GB Memory 4 Processors.
-      Windows 10 Build 22H2, 64bit

Everything works correctly with Visual Studio Code with PlaformIO, but I’m addicted to Visual Studio 😊
In my opinion it has something to do with setting automatic breakpoints when stepping with F10/F1 through the code, because one fixed breakpoint in loop and hitting F5 repeatedly works without any problems. 

Let me know if you want further info.

To be clear, my BOARD is a ESP-WROVER-32 Dev Kit V4.1 with a ESP32-WROVER-B chip. I can't help you after 26 Aug because my trial will be over than and I'm not sure if Visual Micro will work after that.