--watch-admin flag for admin panel customization does not work

[Eventyret]

@chizo

I use gitpod and when I open the browser console, I see that strapi is trying to make a connection to localhost//: which doesn’t apply to gitpod as it provides a different address for ‘local’ connections

Not using gitpod using local VSCode but yes same issue.
@DMehaffy sorry for the tag, do you got any issues or any knowledge about this ?
both yarn and npm does not work. Seems it deletes all files and nothing exists ?