Duplicating candle while right-click on 'birthday' cake

Some reason you duplicate the candle when you right click on that candle on a cake

Step 1: you place a cake

Step 2: you place a candle

Step 3: use /gamemode survival (or use survival mode)

Step 4: right click on candle

WHOAAAAA!! It's a 1 hundered candle its so crazy you will actually farm a candle while you duplicate it