Bug: Sound Played When It Shouldn't Be Played

What Happened...:"
I was riding in a boat with subtitles on and "< Minecart rolls" appeared. I did not hear any minecarts rolling. There was a Minecart with a Chest within 100 blocks of me (97 to be exact). A Minecart with Chest was sitting in a Mineshaft, but it could not have moved.

"Steps To Reproudce...:"
Just ride around in a boat for a while with subtitles on. If you are within 100 blocks of a Minecart spawned from a Mineshaft, a subtitle will appear: "< Minecart rolls" . Doesn't work with Minecarts spawned by placement by player. When placed, "< Minecart rolls" appears, but "Block Placed" does not appear. Also, when Minecart does roll, the Minecart roll sound is played, but the subtitle for the Minecart roll does not appear.