Still happening in 1.8-pre3. For another example of this behavior, see my (duplicate) bug report MC-69648
Yes, that looks like a duplicate. Also, MC-54711 I believe. (It's linked in the first comment on MC-69483)
Added pictures to clearly show the difference in behavior between 1.7.10 and 1.8-pre2.
Andrew Huff
Still happening in 1.8-pre3. For another example of this behavior, see my (duplicate) bug report MC-69648