[6.12.3] CPU Pinning doesn't work when a Docker Compose stack is running

Pinning CPU resources to specific Docker containers using /Dashboard/Settings/CPUset url fails when a Docker compose stack is running. I tried this with and without cpuset: '16,17,18,19' within the Compose file, but on both occassions I get a 500 Internal Server Error. An example of the Compose file:

services:
  youtube-dl-ph:
    image: jeeaaasustest/youtube-dl
    container_name: youtube-dl
    restart: always
    cpuset: '12,13,14,15'
    ports:
      - 9999:80
    environment:
      TZ: 'Europe/Amsterdam'
      PUID: 99
      PGID: 100
      youtubedl_webui: true
      youtubedl_webuiport: 80
    labels:
      'net.unraid.docker.icon': 'https://raw.githubusercontent.com/Jeeaaasus/youtube-dl/master/root/app/webserver/static/favicon.png'
      'net.unraid.docker.webui': 'http://[IP]:[PORT:80]/'
      'net.unraid.docker.shell': 'bash'
    volumes:
      - '/mnt/user/data/youtube-dl/:/config'

And the error:

When I remove the Compose stack (Docker Compose down) CPU pinning works again.