USBHIDKeyboard print function does not reliably output uppercase characters

[dbhaig]

Board

ESP32-S3-WROOM1

Device Description

ESP32-S3-DevKitC-1

Hardware Configuration

SPI TFT is connected to GPIOs 13, 14, 15, 16, 21, 35, 36, 47

Version

v2.0.5

IDE Name

arduino-cli 0.29

Operating System

Linux

Flash frequency

40MHz

PSRAM enabled

no

Upload speed

921600

Description

Keyboard.println("abcdefghijklmnopqrstuvwxyz");
Gives the expected output of: 'abcdefghijklmnopqrstuvwxyz'

Keyboard.println("ABCDEFGHIJKLOMNPQRSTUVWXYZ");
Gives an output with some characters lower case, such as:
'abCdEFGHIjklOMNPQRStUvwXYZ'
or
' aBcdeFGHIjKLOMNPQrsTuVWXYz'

Sketch

#include "USB.h"
#include "USBHIDKeyboard.h"

USBHIDKeyboard Keyboard;

void setup() {
    Serial.begin(9600);
    Serial.println("Keyboard begin");

    Keyboard.begin();
    USB.begin();
}

void loop() {
    Keyboard.println("abcdefghijklmnopqrstuvwxyz");
    delay(2000);
    Keyboard.println("ABCDEFGHIJKLOMNPQRSTUVWXYZ");
    delay(2000);
}

Debug Message

None

Other Steps to Reproduce

No

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[RefactorFactory]

Does #6964 help?

[dbhaig]

@RefactorFactory It is unclear to me how #6964 could be related to the issue I'm observing where the ESP32-S3 is recognized as a keyboard but uppercase characters are sometimes rendered as their corresponding lowercase character.

[dbhaig]

This appears to be an arduino-libraries/Keyboard issue, as code compiled for the ATmega32u4 exhibits similar behaviour.