Donkeys wont go on boats

I was going to leave my Tundra homeland to go to a plains to find a donkey that is across the ocean. I took my boat and went to the village as a pause since it was turning dark. After i slept, i continued journeying to the plains. Once i arrived, i tamed a donkey, put a saddle on it, and rided it all the way back to my boat. Once i tried to push it into the boat, however, it continued moving. I tried it again and then got on the boat. The donkey was floating in the air for 3 seconds probably due to hitbox, then went down, but still was not in the boat.