This is mainly an issue I've noticed with the WEB/BROWSER version, not the App.
There is no "live saving", or if there is, it is not always working or works inconsistently.
More times than I can remember--I have entered text, sometimes over the course of hours. I've taught myself to click on "Versions" which forces it to save the current version. But if I neglect to do that, or close the browser without forcing a "Version" save...there is a good chance that I have lost all the text.
I just tried too. I opened the Notebook page in Chrome...I entered text, then clicked outside the page to return to the page display. I immediately loaded back up the page, and the text wasn't there, as if I never entered.
Yesterday for instance, I was adding text from about 2pm to 8pm. I just kept the Notebook page open in my Brower the entire time. I definitely had internet access for this time period.
This morning--the page "reloads" when I go to that Browser tab...and it's just my original version as if nothing was added yesterday.
This is sadly not the first time this has happened and has caused great frustration. And there is no version available at all from yesterday. Unfortunately I will have to find another note app with live browser saving, this was the "last straw" so to speak.