The Enchantment "Sharpness" dose not multiply corectly.

There is a weird visaul Bug that the Enchant “Sharpness” is not multiplying corectrly. Like on this Image. I have a Iron Sword enchanted to “Sharpness 3” normaly it should show you the multiplied number on the displaycase. I dont know the exact Attack Damage. But it should not display 6 Attack Damage or 7 (like on the picture) i did not test if the damage output on Mobs or other Players but it should not be Like that.

Here is the Picture it is only on the Diamond Sword but it also happend on the Iron Sword in my Survival Word.

Have a great Day or Evening.