The scoreboard subcommands "players set" and "players add" no longer support players who are not online. This results in many quirks, notably including:

• When the "*" wildcard is used, it will attempt to execute the command on all tracked players, but will fail for players who are offline.
• "Fake" players can no longer be manipulated. Fake players are a feature supported by Searge of Mojang, as seen when the #HiddenFakeName feature was added (names preceded with a # are not rendered in the sidebar).

In any case, if a player is not online, attempting to manipulate their score yields the message "That entity cannot be found."

Steps to Reproduce:

1. Create a new scoreboard objective,

   scoreboard objectives create Test dummy Test

2. Give yourself and another player scores in this objective,

   scoreboard players set <name> Test 100

3. Have the other player log off
4. Attempt to modify their score,

   scoreboard players set <name> Test 200

5. Observe that it fails: "That entity cannot be found."
6. Attempt to modify everybody's scores,

   scoreboard players set * Test 300

7. Observe that you receive two messages: one for your score (successfully changed), and one of failure (for the player who is not online)
8. Attempt to track a fake player, using a feature added in a previous snapshot,

   scoreboard players set #FakePlayer Test 500

9. Observe that it fails: "That entity cannot be found."

In previous versions, none of these commands would have failed.