Sidebar Bug: Duplication of the Current Section List

The list related to the section is repeated multiple times. See: [What is GitHub](https://study.hackyourfuture.net/#/git-and-github/github)
It happens with most sections and seems associated with a loading event. The repetition does not occur with clicking.


![image](https://github.com/HackYourFuture/study/assets/167855567/f5f1c626-6140-480f-94e6-8c2b428c4995)
