Dear Mojang Team,

I have a weird bug, where I respawned the Enderdragon (on a realm) with a friend, who then died to an enderman. I wanted to wait for him with the fight, so I tried to go through the end gateway to stall the fight until he came back. But I struggled because I am relatively new to keyboard and mouse. I kept missing the gateway, until the dragon came up from the fountain/portal into my direction, which made him fly right into the gateway. I then waited for my friend and we searched for the dragon, but it was nowhere to be found. Now when we got to the end, we need to have an enderchest that we put everything into, so we can jump into the void and get back home with our stuff. I attached a video clip (sorry for the bad quality, I had to crop it smaller which made it bad but you can still see everything). 
Edit: This happened before the 1.21 update.