The bug
Ender pearls can land on wind charges in mid air.
Steps to reproduce:
Throw an ender pearl first
Then throw the wind charge in the right timing and place
Notice how the ender pearl can land on the wind charge in the air (don't worry there's a video demonstration for this)
Intended behavior
Ender pearls shouldn't be able to land on wind charges.
Actual behavior
Ender pearls can land on wind charges on the right circumstances.
Video
Here's a video demonstrating the bug:
This actually seems like a good advanced strat to go high into the air without rockets in order to use elytra...
Edit: Confirmed btw, but it's hard for me to get the timing right, but a pro can do it with no issue I believe.