I also confirm this problem on 10.10 and successfully applied the work-around. Additionally, I reported this problem and fix in Bug #84899 as suggested in comment #8: https://bugs.launchpad.net/openssh/+bug/84899/comments/54.
Ubuntu uses the Debian ssh package, so perhaps this bug should be merged with #84899?
I also confirm this problem on 10.10 and successfully applied the work-around. Additionally, I reported this problem and fix in Bug #84899 as suggested in comment #8: https:/ /bugs.launchpad .net/openssh/ +bug/84899/ comments/ 54.
Ubuntu uses the Debian ssh package, so perhaps this bug should be merged with #84899?