I’m glad you asked this, because line-breaks and the overall issue is driving me nuts.
Apparently, wordpress is doing quite a few operations when you hit ‘save’ or ‘preview’ or simply switch from the ‘visual’ to ‘code’ tabs.
I was hoping that whatever I typed into the textarea in a post, would be posted verbatim, without adding garbled css inline styles, tags, etc.
It’s driving me nuts.