NEW ANSWER If you position your cursor on a blank line at the bottom of the blockquote and press enter the last line of the blockquote will be liberated and your cursor will escape to the left edge of the editor Press enter here The quick brown fox jumps over the lazy dog.| n to create a blank line like so The quick brown n fox jumps over n the lazy dog. n | n n and then press enter again The quick brown n fox jumps over n the lazy dog. n |n nA similar process works on the first line of a blockquote if blank. OLD ANSWER I write this only because I hope it saves you some headaches not because it represents any deliberate design choices. If you use a Mac the keyboardmands in what follows should be performed with themand key instead of the control key. It may be wise to click Save Draft first just in case something goes awry. OK! Here we go In order to introduce some non- space at the end of an answer your best bet is to select all (ctrl-a) cut (ctrl-x) which temporarily clears the answer space (if your cursor remains inside an empty block quote hit delete until nothing is left) then press enter a couple of times to create a few blank (non-) lines hit the up arrow to move the cursor up from of the last line and then paste (ctrl-v). Now the blank lines beneath the line where you pasted should be preserved and if you move the cursor down there and start typing you won't be typing inside the block quote anymore. nI just did this in order to this sentence so here's proof that it works at least in my current browser (Mac Chrome). If you're writing an answer in a browser that doesn't support this hack click Save Draft and try opening the question page in a different browser then proceed with the aforementioned obscene workaround.