removed bug notice since the issue resolved itself

external_control/external_control.ino

@@ -196,11 +196,6 @@ void runCommand(){
       Serial.print("s");
       return;
     case 'r': // read digital value
-      /*bug:
-       The following "r" (or any other text you may put there) will never get printed despite this code branch being executed. Don’t ask me why or how.
-       Tested on Linux Mint 20.1, Arduino IDE version 2:1.0.5+dfsg2-4.1
-       Tested with Arduino Uno and Nano 328P
-      */
       Serial.print("r");
       pin = waitForSerialInput(2).toInt();
       if (pin >= NUM_DIGITAL_PINS) Serial.print("e");