I don’t know what is going on but it is very concerning.
I went to open one of my documents and to my horror it was mostly blank, except for a few elements! It appears as if only one type of elements are rendering now. I went through History thinking perhaps I deleted things by accident, but all of History has the same missing elements.
I think this is a bug as I can still see the elements in the Documents preview

However, when I open the Document, most elements are gone!

Please help!