我期望发生的是...：
当我和爱丽特拉一起跑和跳的时候，我只能“打盹”一次。

What actually happened was...:
When I run and jump with elytra,I can "Nap-of-the-earth",and when I fold up my wings and land,I rush and jump again ,I can fly faster and higher.

Steps to Reproduce:
1. wearing elytra
2. run and jump to change to flight
3. runing and jumping while landing

4.you can fly faster and higher