HID keyboard won't release keys when called via schedule

Calling KeyboardInterface().send_keys() from a function called via micropython.schedule() doesn't seem to allow keys to be released, causing a spamming issue. This code reproduces the issue:

import usb.device
from usb.device.keyboard import KeyboardInterface
from time import sleep_ms
from micropython import schedule

KBD = None

def send_keys(foo):
    keys = [-0x02, 5]
    print("sending keypress")
    KBD.send_keys(keys)

    keys.clear()
    print("clearing keypress")
    KBD.send_keys(keys)


def main():
    global KBD
    KBD = KeyboardInterface()
    usb.device.get().init(KBD, builtin_driver=True)

    sleep_ms(5000)
    print("starting loop")

    while True:
        send_keys(None)
        # schedule(send_keys, None)
        sleep_ms(3000)

if __name__ == '__main__': main()

running schedule(send_keys, None) instead of send_keys(None) causes a flood of 🅱️, this is on a Pico running 1.23.0 and whatever the latest version of usb-device-keyboard is currently in mip.

Start with KeyboardInterface.send_keys and compare its behavior when called directly versus through micropython.schedule using the reproduction shown in the issue. Confirm the cause on a Pico with MicroPython 1.23.0, then verify that scheduled key presses release correctly without producing repeated input.