Just noticed the same today on my mac. Freaked me out as I knew I had more in that note. Made me question the safety of my entries. That was on the mac, so I went to the same entry on my ipad and it was there, but back on the mac I had to use the arrow key to go down and the rest of the note appeared line by line. That’s all I know. I actually got on the community today to see how my data is backed up in the app as I use it for a journal as well as business. The drive I was using for TimeMachine just recently died so I’m feeling pretty vulnerable until I replace that.
While we’re at it, I was moving a few entries around, putting them in better categories. An odd thing happened where a few entries had all its “h” characters hi-lighted. This happened a few times. If I closed it by editing something else it would go away when I returned to it. But later happened again in other entries.