Also happened on a regular article. I was editing an article and I noticed after a while the time didn't change, and there is no "Save" button, so I lost a good 40 minutes of work. Please fix and add a nice big red candy-like button that says SAVE.

I have this issue and similar problems with articles and my timelines. Even when I get the spinning green circle and checkmark, and the time does update, I will lose text at the end of text fields, missing information in article mentions in my timeline, or in my missing data inside the brackets of BBC code. As if it's saving before I finished typing and then not saving again when I've moved on. There are times when I will specifically wait for it to save again, or I will add some text and delete it just to get another save. Then come back and lose information.