Command Block malfunctioning

I went to my creative world to check the new update, where I have a depleting Score system already in place, when I got in, it created a long series of numbers and letters (and_underscores) as a player that it started to deplete from, rather than deplete from mine, additionally it shouldn't deplete under 0 yet it does on this new "player"

What I expected to happen was...:
That when I go in to my creative world, everything works relatively normal.

What actually happened was...:
The already in place score system went out of whack... kind of.

Steps to Reproduce:
(Note that this is somewhat speculation, as I don't know if this is an individual problem, or a more prominent bug)
1. Create a scoreboard system that includes players. (Might only work if this is done in a prior version)
2. Attach a redstone clock or the sorts in it and make it run.
3. Come back (if applicable) to the creative world in snapshot 14w02a(b)

Sorry if this was already reported, the stream didn't update for me.