Unity 2020 Inspector Overlay Bug When Expanding Element in an Array

Hi,

I am using Unity 2020.3.36f1

1) I have a public array in a script
2) Each array element is a structure
3) In inspector, when I open the element within the array, information of the element would over lay things below it instead of shifting down. Hard to explain in words, please find YouTube link below.

I have also attached a sample project that has the same issue. This happens to all script in my entire project so this is pretty bad.

Youtube Link:
https://www.youtube.com/shorts/8G-UJp8tgd4

Sample Project link that replicate the issue:
https://drive.google.com/file/d/1xKDxBvh6iiBAPFFfLBDehWj6B2sHplz7/view?usp=sharing

Please help
Thanks,
Wai Fung