Hmm...after some testing, I suspect it has something to do with my own Firefox browser.
Cause everytime I post something, there will always be an extra line in-between the paragraphs, which I have to go to Edit to remove it. Maybe something to do with the line breaks and the round brackets? Paiseh, I'm not programming-trained, so can't say better.
(Testing testing *still cannot insert close round bracket here*