When you try to use a furnace, the screen will freeze, you cannot out any fuel into it, and you cannot smelt or cook anything, I believe this is a big, important bug, which needs to be fixed very soon.
MCPE-2571
Furnaces cannot be used.
Resolved
Duplicate
0
Duplicate of MCPE-2453, please use the search function to see if your bug has already been submitted. Currently over 57% of tickets are being closed as duplicate.