Hello so this is a gamebreaking glitch which causes your world to softlock.
So i was playing normally as always i build the nether portal went inside...
I saw a ghast he shot a fireball at me i tried to block it with a shield. After the fireball hit my shield the game crashed. I tried to log onto my world which i have spent hours of work on.
And i cant. I was stuck in an infinite loading screen. I tried to get into my world multiple times. I even created a copy of it nothing worked. I was able to recreate this glitch in another world. Here is how it works. You create a new world. You get yourself a shield. Then head over to the nether. Wait until any ghast attacks you. Then block the fireball with a shield. If everything works the game should crash and when you try to get into the world again it wont work. Keep in mind this glitch was done in (minecraft PE)
I hope you can resolve this. Because my whole world is still softlocked because of this issue

UPDATE: Doing this glitch in creative and then switching to survival will just get the game to crash. You can still log onto your world. If you do this purely on survival the game world will softlock with you unable to get in.