File code not appearing

Bug description:
When I attempt to edit a file I click on the said file and my code does not appear. Please Help. I am fairly new to coding so it could be a simple mistake on my part or just a straight-up bug. Let me know if this has happened to anyone else.

Expected vs Current Behavior:
I am expecting my code to appear when I click on my file. Currently, the code is not appearing when choosing a select file, it only shows the last file that I was able to click on.

Steps to reproduce:

Bug appears at this link:

Screenshot(s)/Screen Recording:

Browser/OS/Device: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/ Safari/537.36

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