I discovered this bug today when I tried to enter Minecraft without the presence of internet or mobile data, the game just crashed, I had to try several times until I managed to get in. This usually does not occur to me when I have internet, it happens only without the presence of the internet or mobile data. There was a time, also without internet, that when I was creating a new world the game crashed on the loading screen.

Steps to reproduce:

1- Turn off the internet or mobile data.

2- Now try to get into Minecraft.