Low pet weird duplication bug

Description of the bug: (optional screenshot/video): My name tag is turning into my fuarking pet https://streamable.com/dpxxe
What is supposed to happen?: The name tag isn't supposed to turn into your pet o-o
Where did you find and/or notice this bug?: Just randomly sitting in the fm.
A step-by-step guide to re-producing this bug (optional): Ok if you wanna do this this is what u have to do:

1) Put a pet and a name tag in your inventory
2) Feed ur pet
3) Ur name tag will turn into a copy of ur pet that u can't equip or anything
4) If you wanna do it again, sort your inventory. The name tag will turn into a name tag again. Then, swap the places of the name tag and the pet. Now you can repeat the process.

Extra information (optional): I want 10k donor nx as a reward for finding this bug thank you!!!