Bit of a bug. I haven't explored this explorer much, but didn't notice this until after today's update. Note the bottom of the index on the left will not scroll past "Joy". I can see that there is at least one more entry there, but can't scroll to it.
However, I also discovered that if I click on that bit of word I can see, the rest of the index menu will open up allowing me to scroll down to the bottom.
[I looked through other threads and did not see this bug reported yet. I may have missed it.]
