Return at end of paragraph behaves as return in paragraph. To form a new paragraph you need to press Enter twice. Probably related to No 2601796
Marked as Duplicate of bug 1875859
I think it should be 2601796 which I admit I missed. I believe that 1875859 was a Feature request for 0.7 .
Sorry - my last comment was rubbish. I did not miss 2601796. My report may be related but doesn't seem to be the same to me though it might respond to the same fix. I was referring to a Return actually at the end of a paragraph. To a user this is not the same thing as in the middle of the paragraph.