This is actually a question about this forum, not the game.
I was trying to edit a post I made earlier. I went into the advanced edit screne, made the changes, then clicked 'preview' and it showed a completely empty post body. Nothing was there anymore except the title.
What did I mess up?
Editing a post
Sage Tylos
Messy
not quite sure... you did the right thing. Did you try again?
dilan155
you could try copying the body of the post so that even if you post a blank one you could just re-edit and then paste.
Elder III
Ctrl A then Ctrl C are your friends whenever attempting to edit a post on GWG.
Savio
You may have messed up a tag somewhere, or you made a post that was too long. It would help if you told us what you were trying to add/edit.
Quaker
I've had similar experiences, usually as a result of accidently hitting some ALT or CTRL + something. But in your case, it could be nearly anything, including just a random glitch by Guru.