Troble with rtf editor

if i write in “Write post” window word1<space>word2<space>word3<space>word4<space>, after this, i put cursor after word1 and press <space><delete>.
Visual i have space between words, and in HTML all clear, but after publication i see – all text is single string without carrying to new string.

If see in html source, i have clear html code, all well, but publication very bad – length of string may be longer then “Width” parameter of “content” in css. Very ugly…