/spawnpoint does not work correctly

14w33a hasn't even been released yet, you don't know if it will be an issue in the next Snapshot.

Please provide the full command used.

Is it in Singleplayer or on a server with other people on?

I am on a singleplayer world

And what is the error that shows when you are trying to execute it?

Dupe of MC-59358

Ticket resolved as incomplete, because no answer in a reasonable amount of time (1+ year), if it still happens, please update the ticket.