Gee shantaram you are really moving along on the research side of things, way to go :-)
Howdy FOIL HAT What is the issue?? I am not sure what you mean. Text dissapearing? Do you mean when you type (a new post) the text goes past the edges of the text editor (posting box)?
So you are typing in box and then hit edge | then this part you cannot see??
If so then that is not cool and some you would assume there is a simple fix
Perhaps take it to the feedback forum, some excellent posters sit on that one.