Solved: Line breaks deleted in WordPress editor
Most annoying thing with default WordPress setup is that it deletes line breaks and you will have to play around with editing the source code / text view which is not too convenient, sorry, for most of the users.
To be able to really work around the issue of WordPress deleting the line breaks is like this:
1. Install TinyMCE Advanced Editor
2. Go to Settings -> TinyMCE Advanced and tick Stop removing the <p> and <br /> tags when saving and show them in the Text editor