i have similar problem..
it started with my post going missing (showing a blank post) after i click ‘update page’ (i’m writing a new page).
so i decided to save all my html codes less they go missing again, and paste them under the html editor, when i switch to visual editor, the post is still there but when i click on ‘update page’ again, the post is gone and the page is still empty..
please help.
thanks