I stumbled into a defect in Cloudron, it appears. I had a mail list / alias created on a domain in Cloudron and I deleted them a bit ago because we were turning them into actual mailboxes.
The mail lists no longer exist now since they were deleted by me a little earlier, however In the Event Log page, I see that it thinks I added them. Screenshot attached.
This should be reproducible but if not then please let me know and I can give you access to review my server if needed.
Thank you in advance.