I can’t find the create new project button! 
You might wanna have a look at the recent release notes.
There is a small change in the create new project thing.
I am not exact sure about what exactly it is (As I havent created new project in a while)
But checking the release notes would be a good help for ya.
There’s a new project button in the project info menu at the top-left of the editor - https://glitch.com/edit/