After going to my friend's place I lost most of my structures when I loaded up my world at his place. Back at home I have the same issue. I've spent hours making all that and it's gone
MC-217841
World Missing Structures After Console Load Up
Resolved
Awaiting Response
0
When you say console, do you mean computer? If not, then you should report this in a different bug page (https://bugs.mojang.com/projects/MCPE/issues/).