I just saw now that the line between the number of answers on a question, and the answers to that question, has vanished:
There used to be a gray line between those two parts (where the red freehand
circle line is in the above screenshot):
Can this line please be brought back? This line provided a clear differentiation between the number and sorting controls at the top, which are global to all the answers, and now they look specific to the top answer.
It appears that the line was part of the sorting button markup, which used a tab bar style, but when that was replaced with the buttons seen today, it was removed along with it.