Potion behaviour for 1.12 version

Since the 1.12 version came out, you can't do a "/give" or "/replaceitem" command that is supposed to give you more than one potion.

It wasn't the case on the previous versions of the game and can be a real problem for map-making.

Note : The 1st screenshot is me before entering the said command (It worked perfectly on the previous versions). The 2nd screenshot is me after entering the same command... As you can see, the game tells me that the entered value used for the command is too big (4 potions) and should be inferior or equal to 1.
Isn't this like a huge problem ?