Window 10 Monitor Copy fails (empty clipboard) when first char included in the selection

Tested using Arduino IDE 1.8.19 on Windows 10.
with this sketch
```
// Uno test for monitor copy/paste on Windows10
void setup() {
Serial.begin(9600);
Serial.println("Line 1");
Serial.println("Line 2");
}
void loop() {
}
```
With AutoScroll OFF or ON
Ctrl+A (shows both lines highlighted) followed by Ctrl+C and then Ctrl+V into notepad => no text

With AutoScroll OFF or ON
Click and drag over both lines (showing both lines highlighted)
followed by Ctrl+C and then Ctrl+V into notepad => no text

With AutoScroll OFF or ON
Click and drag over both lines **_BUT NOT the first char of the first line_**
followed by Ctrl+C and then Ctrl+V into notepad =>
```
ine 1
Line 2

```

Reproduce the selection and copy/paste steps in Arduino IDE 1.8.19 on Windows 10 using the sketch and serial monitor described in the issue. Trace the serial monitor's text-selection and clipboard handling, then verify that Ctrl+A and mouse selections containing the first character paste the complete selected text into Notepad.

Written by the indexing model from the issue text.