Expected Behavior

Writing a command into a command block and then activating the command block should execute the command.

Actual Behavior

The command was removed from the command block immediately

Reproduction Steps

Use revision e3de204 (latest dev branch commit atm) and start the client, go into singleplayer, place a command block, write a command into it, press done. Place a redstone block next to the command block.

Might be related to loss of client side block entities in #137