4.2: new returne line in bigtexts each time you open the simple text editor

If I write in a bigtext (default WYSIYG editor) something like:
"hello,
balbla
signed stéphane"

and I save it. Then if I reopen the update engine and goes in the simple text editor, this creates new lines returns in the HTML code. If you validate the page and reopen your container with your bigtext afterwards (always in the simple text editor), this still add new line returns.... and so on.