smelter unusable

one iron into each slot, and then press smelt on the bottom?

I figured it out.  It is a controller support issue.  The smelt button at the bottom does not appear while using a controller.  I only have the ability to "cook" and it will not work.  Still a bug to be fixed. 

@WimpyWolfgang how do you "smelt"? I usekeyboard and I only get the "cook" option.