Glitched New World Menu

I found a bug relating to the inventory menu on a previous bug report, so I wanted to load up a new world with the 1.20 features again and either I was clicking too fast or I got unlucky.

As seen the attached file the create new world menu are still visible but the new world has loaded behind. I did click 'create new world' before and when i tried clicking it again my minecraft went black screen and won't properly close. 

My minecraft launcher won't open either and in my Task Manager minecraft dosen't appear to be running so I am forced to restart my computer.