I am on 10.58.8-mac-ddl-public (4175), Editor: v172.19.3, Service: v1.69.5 and have also just lost the contents of a note. In the past I have had trouble with notes not rendering correctly but have always been able to ignore it for a few days and the contents eventually reappeared. Today was different.
The note appeared to lose the entire contents and replaced it with three "Untitled task" entries. While I was submitting my ticket, part of the note reappeared...but only part of it. The restored contents were definitely rearranged and not located or formatted in the way it was originally.
This is absolutely ridiculous behavior for a note taking app. How can this even be a product when contents are disappearing and partially reappearing?
I have also reported it to support with logs.