I discovered this when I was getting chorus fruit from the chorus plant in the end. I wanted to try it and realized that the cool-down for the chorus fruit started as soon as I right-clicked.

What I expected to happen was:
Nothing. Cool-down would begin upon consumption.

What actually happened was:
The cool-down would begin as soon as I began to eat it.

Steps to Reproduce:
1. Have a Chorus Fruit ready for consumption.
2. Begin to eat it.
3. Observe your Chorus Fruit in your Hot Bar.
Files:
https://drive.google.com/file/d/1w4ebhOxAzJ0orio3oFH2b3pgis4Vsnjz/view?usp=sharing