Everytime I try to edit an game it gets stuck on this screen.
Also, I noticed that the mouse cursor changes everytime I move it, this could probably mean that the game has already loaded?
That’s very strange, since i didn’t ever have any problem with loading the game at this screen. Isn’t it to be something about your internet connection to be the main influence for it?
Nope, my internet is actually fast. I already reinstalled the game three times in hopes of fixing this bug.
Does this happen on every map or only a specific one?
Every map, I already made two trying to get it to work.
That is odd. I will add a crash logger in the next update so we can see what is going on behind the scenes. But, for now, there isn’t much I can do without access to your system 
mine is like that too.
I discovered something, the game loads normally, but this screen freezes and we can’t see anything, but if you drag the mouse on the screen, you will see the cursor changing, as if you were modeling a block and you can hear its sound effect.
So it’s just a visual bug I imagine.