Works well with Android 8,9&10 devices however Android 11 not so much. It appears Google have changed the way COPE works on Android 11 switching to something called enhanced profiles. Intune doesn't seem to work with this well at the moment.
When testing with Android 11 the work profile has Apps installed to it as part of the initial setup process that were not included in our managed play store or assigned to the work profile, for example Netflix and some of the standard Samsung email/calendar apps. The Android 11 device is using the same profile and settings as older versions which do not have this problem. Not sure if this problem is specific to Samsung devices being synced from Knox or any Androud 11 device?
Also when initially enrolling Android 11 devices the personal profiles play store doesn't work preventing users from installing their Apps. A while (several minutes) after the enrollment completes the device randomly reboots and the play store works. Logged with MS support and told currently expected behaviour.
Worth being aware if you plan to use for the most modern Android devices. A real shame as I was looking forward to finally rolling COPE out! Hopefully it will be resolved.