Test: Spawn, recapture warp to spawn and spawn it.
Results: Horse was exactly the same, not missing any items (saddles or armor) and waws still tamed.
Test: Spawn horse 5 times
Results: Horse was fine after 5 captures. Nothing had changed.
Test: Spawn horse 5 times, change inv slots each time
Results: I got distracted and saw 2 other horses. I captured them and continued with the horse I had been using. Strangely enough, I spawned it (originally white) it had lost it's saddle, and was the same colors as the other 2 horses I had captured. It also had 53 hearts (Sidenote: It may say 53, but it only spawns with 20 some)
Test: Spawn horse 5 times change inv slots each time
Results: On the 5th time I believe it turned into a donkey... I do not know how to change it back... also it still said horse when i captured it
*Random result* I was taming a horse cuz the other one was a donkey.
I typed /back but forgot to get off my horse. It says returning to previous location but it doesn't. Also when you dismount and do /back you go to where you originally typed /back on the horse
Also you don't suffocate going through leaves.
Test: Spawn the test horse then a random untamed horse
Results: Both horses remained the same.
Test: to make the donkey a horse again
Results: I spawned it and it was a horse 5 minutes after being a donkey.
These are the tests I performed. I will update and post some more later. kthx