You are RIGHT!!!
This problem really came from node version I installed in my laptop. To make "npm link" without sudo I was using nvm to install NodeJS and I forgot to select version 12.17.0.
Great teams. Thanks a lot!
@sharonyue is your browser window really short? Are you saying the minimum composer height is too tall to show content in that case? What kind of device are you on that has a window like this?
Exactly.
I am using 4K monitor with 300% scaling. I attached several images in the following:
It also explain that why I want to remove the fixed header in the head https://community.nodebb.org/topic/15256/layout-design-in-the-latest-nodebb