I tried it without the case and with clean install, but the results are still the same.
Important: Now don't use the Argon One case, until we found the shutdown issue.
Activate debug logging at GUI, and try to shutdown from GUI again.
- If you still have SSH after that, you can use pastekodi to upload kodi.log, and post the resulting link on the forum.
- If you don't have SSH after the shutdown attempt, remove power, remove microSD, and copy the kodi.log content from microSD to PasteBin. Then post the link.