Put the summary of the bug you're having here
Severe crash bugs involving the render distance cause my chest , my signs, my stuff like diamonds in my chest and my peaceful animals to disappear.

What I expected to happen was...:
There were no randomly severe crash bugs and my stuff inside the chest should be saved

Describe what you thought should happen here
Chests should hold all my items even while my minecraft crashes

What actually happened was...:
That it crash, my animals are gone and replaced by new ones , my chest and signs are invisible and my loot are permantely ? gone . It some like my world just restart itself.

Describe what happened here....

I was playing my minecraft pe world . I store in chest my valuable loot like a chest full of iron , gold , diamond , food , redstone, etc.I experienced lots of crashes involving my render distance. It got up to the point when all my stuff in the chest disappear , the chest itself and my farm animals .

What should I do ? Should I make a new world and restart? If I restart it I would lose all my stuff like diamonds . In conclusion, I love my world and my loot in it . I don't want anyone to have this issue again. I also want my resources back
or should I just mine more ?
.
Please try to resolve this weird bug or issue so no one ever get this again and I won't have it again too so I don't have to cry about losing my stuff.

Steps to Reproduce:
1.Put your render distance into the 3rd or 4th mark
2.Next,Create a new world
3.Third, gather the essential things you need in survival
4.Gather Farm Animals
5 Then place lots of chests and signs,and put in it valuable loot and other items
6.Play on that world until you experienced some random crash
7.Continue playing until you experienced a severe crash that should made your chest , the loot and farm animals disappear