Invincibility

I was gonna jump on my friends crops as a joke with a horse but when I did it kicked me off the horse and  everything attacked where the horse was but I was out exploring, I didn't take fall damage, I couldn't drown, and I couldn't die to lava. ( I feel that it would be easiest to show someone the bug live in a discord call since I don't exactly know how to screen record)

What I expected to happen was...:
I expected to break the crop

What actually happened was...:
I was kicked off the horse and became invincible if the horse was in a safe spot away from mobs

Steps to Reproduce:
1. Till 2 out in every direction surrounding a water placement
2. ride a horse and jump with the horse on the tilled ground
3. that's it, you are then invincible