"SHOW MORE" Button Bug In Boards

When you open a new board you see the discussions and at the bottom of the board there is the button "SHOW MORE". When you push that button older discussions of the current board appear. I've noticed that sometimes when you push that button, the older discussions that appear include discussions that were already visible before the button was pressed. Usually the discussions that reappear are the last 6 to 7 discussions of the current board you are viewing. Sometimes only 1 discussion reappears and sometimes 6 to 7. Sometimes no discussions reappear. This bug does not happen often. Before posting i tried opening 10 different boards and this bug occured one time. Edit* I've seen this bug happening in EUNE and NA Boards.