Thanks for Your reply.
I have to admit, I'm a bit disapointed. If I have to work manually, checking every end of the line, then it doesn't make practical difference if I use hard space or "soft enter". To be honest, I find "shift+enter" way faster than "delete => ctrl+shift+space"
So many tutorials over Internet say that you should use hard space when writing a publication instead of shift+enter, but nobody even bothered to say that it won't work on justified text (and most publications and books i've read HAVE justification)
Too bad.
And there I thought that with version 12 Office will bring me a new look on word processing

...at least styles work (ALMOST) great