Image 1: Showing two players online, one has no value for the ones objective, the other has 0.
Image 2: Showing the command to be executed "/scoreboard players set @a[score_ones=0] ones 1"
Image 3: Showing the results. The player with 0 in ones was set to 1. The player with no value for ones was not set.
Environment: Mac OSX 10.9.2 Java 7 update 51
I believe this is the same as the bug I'm experiencing. Here's another way to explain it:
In previous versions (confirmed in 1.7.5), executing the command "/scoreboard players set @a[score_ones=0] ones 1" would set all online players with score 0 or less AND all players who were not on the ones scoreboard.
in 14w10c, the same command only sets the score for players who are already on that scoreboard.
I can confirm this issue. I have experienced it as well. It broke my minecart station. 😞
This is also the case when attempting to interact with buttons and levers. In creative mode, the item bobs back and forth as if you are placing something.
With sword in hand while crouched, right clicking a button blocks. With a bow, it pulls back an arrow.
Another video demonstrating the problem. http://youtu.be/tS1ZnLMLkMY
We are on 1.10.0 ios and have been having this problem for about a week now. Nothing changed on our end, my son and I were playing every day and one day we were no longer able to connect.