Create new world screen appears even when world is created; clicking on button causes freeze or crash

The bug

I just created a new world to test out the new features, but the game froze for a second after I enabled the 1.20 data pack. When I clicked on continue, nothing happened until the game unfreeze. But the create world button is in the same place as the continue button. So when the world loaded up, I was met with the create new world screen again. When I created a world again, it got stuck on preparing world for creation

Steps to reproduce

1. Create World Tab
2. Experiments
3. Double click on Done
4. Now, you will get two buttons, if you click Create New World game will softlock