RP2040 does not release countio PWM slice on VM reboot

[mrdalgaard]

CircuitPython version

Adafruit CircuitPython 7.0.0-beta.0 on 2021-08-24; Adafruit Feather RP2040 with rp2040

Code/REPL

import board
import countio

counter = countio.Counter(board.A1)

Behavior

Letting code run to completion or breaking out of it, and reloading will output following

soft reboot

Auto-reload is on. Simply save files over USB to run them or enter REPL to disable.
code.py output:
Traceback (most recent call last):
  File "code.py", line 4, in <module>
RuntimeError: PWM slice already in use

Description

Only fixed by a hard reset

Additional information

No response