Minecraft Snapshot 19w41a have many Items and Food a Black background

Hi,

in your newest Snapshot 19w41a give it a bug who 2 Items a Black Backgorund in the Tab have.

• all Signs
• Bell
• Player and Zombie head (Only the Head are Black not the Backgound!!!)
• Lever
• Cake
• Cauldron

Please fix this Black Background of the Tab Icons.

I have Pictures with the Bug with all the Items and Foods in the Pictures. Hope this Picture help to fix the problem