Note Entered -- Some content lost

Note Entered -- Some content lost

I entered a short note today on my Chromebook using the web app. Note appeared fine. Changed to another note to do some editing. Returned to the short note and found the last half of the short note content missing. Checked the history and the content was also not there.

Changed to my Windows laptop. In the web app, the content that was missing on the Chromebook was also missing on the laptop. On the Windows laptop, I recreated the missing content for the note. When I returned to the web app on the laptop to retrieve the note content a few minutes later, again the new content in the latter half of the note was missing.

This has never happened before. I hope it never happens again. What might be the cause of this?