SinglePlayer LAN World - Player Tab List not working

When in a SinglePlayer world, I used the Esc menu to "Start LAN World" and then got two or three players to join from my local area network. I wanted to see how many people had logged on, so I held TAB(and yes, I checked the Controls, TAB was registered to "List Players" under Multiplayer), but the menu that always pops up on a true server did not show up.

What I expected to happen:
When holding down TAB, I would see a list of online players

What actually happened:
I held TAB, but nothing happened, instead of a list popping up.

Steps to reproduce the problem:
1. Create/join a singleplayer world(1.7.2)
2. Open it to the LAN
3. Press and hold TAB

P.S. I searched for this issue, and did not find any matches, sorry if this was already posted.