If you get a spawn egg and try and remove it in the creative inventory it doesn't always work. If you try and click on a different spawn egg rather than removing it will stack it. I have a gif below to show exactly what is happening. This did not used to happen and it is now, it seems to be ignoring the NBT tags and thinks it's the same item. This doesn't appear to happen with other items like wool, only spawn eggs.
Gif of what is happening:
https://gyazo.com/b32e0129343d7576c90143a4d617d999
As you can see, it stacks the item regardless of NBT tag, only removes when you click another item such as a book and quill.
Linked issues
duplicates 1
Comments 4
That's because the Damage value now is always 0. a new NBT tag "EntityTag" (Actually, this tag could be used for armor stands in 1.8, so it really isn't new) replaces the damage values of the spawn egg, therefore stacking them. however, you can't stack 2 types of spawn eggs together. the same goes for arrows. the tipped arrows have the same damage value, just a new NBT tag called "Potion:'minecraft:(WhateverThePotionEffectIsCalled)'"
Heck, even the potions have the same problem now. but you can't mix potions, splash potions, and/or lingering potions. (splash potions have their own code names now instead of "minecraft:potion" (splash potions are now code-named "minecraft:splash_potion"))
All in all, placing items with another item with the same code name with the same damage value will stack it instead.
Same as MC-82986, and already fixed.
Also happens to arrows.