Board Thread:Bug Reports/@comment-24391915-20170509114609/@comment-27219153-20170509205302

I tried a horse spawner and the GUI worked fine for me. Is the spawner you were trying to access a newly placed spawner, or is it from an older update? If its newly placed I would recommend updating java, as its the main difference I see. Its its from an older update, I would imagine something got changed and old spawners are incompatible.